Emergency and Interim Administrative Rules

Emergency and Interim Administrative Rules

Introduction

Administrative agencies normally follow established procedures before adopting legally binding regulations.

In ordinary notice-and-comment rulemaking, an agency proposes a rule, publishes notice, receives public comments, considers the relevant material, and then issues a final rule.

But what happens when the government believes it cannot wait?

A public-health threat may require immediate action.

A financial crisis may threaten the stability of a market.

A natural disaster may create an urgent regulatory problem.

A newly discovered safety risk may require an immediate response.

In circumstances like these, administrative law provides mechanisms through which agencies may sometimes act more quickly than ordinary rulemaking would allow.

These mechanisms are commonly described as emergency rules, interim rules, interim final rules, or temporary rules, depending on the governing statute and agency practice.

They reflect a difficult balance:

Government sometimes needs to act quickly, but urgency does not give government unlimited power.

Emergency and interim rulemaking therefore sits at the intersection of administrative flexibility, public participation, statutory authority, due process, and the rule of law.

The central federal statutory framework is found in § 553 of the Administrative Procedure Act (APA). In particular, § 553(b)(B) permits an agency to dispense with ordinary notice and pre-promulgation public participation when the agency finds, for good cause, that those procedures are impracticable, unnecessary, or contrary to the public interest. The agency must state its reasons in the rule it issues. The Cornell Law School Legal Information Institute’s text of 5 U.S.C. § 553 provides the primary statutory framework for understanding this exception.

Emergency rulemaking is therefore not simply:

“The agency has an emergency, so it can do whatever it wants.”

Instead, the legal question is:

Does the law authorize the agency to act immediately, and has the agency properly justified the departure from ordinary procedures?

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1. What Is an Emergency Administrative Rule?

An emergency administrative rule is a regulation adopted under circumstances in which an agency determines that waiting for the ordinary rulemaking process would create unacceptable legal, practical, or public consequences.

The essential feature is urgency.

Ordinary rulemaking generally assumes that there is enough time to:

1. publish a proposal;
2. allow public participation;
3. evaluate comments;
4. formulate the final rule; and
5. allow the rule to become effective under the applicable requirements.

An emergency rule can shorten or bypass some of those steps when the governing law permits it.

But emergency status does not itself create authority.

The agency must still identify a lawful basis for acting.

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2. What Is an Interim Rule?

An interim rule is a rule that takes effect before the agency has completed the full regulatory process or before the agency has reached a permanent regulatory solution.

The terminology varies.

An agency may use expressions such as:

• interim final rule;
• temporary rule;
• emergency interim rule;
• interim rule;
• temporary regulation;
• or emergency regulation.

The precise legal meaning depends on the statute, agency, and circumstances.

An interim rule may be intended to operate temporarily while the agency gathers information, completes further procedures, or considers whether a permanent rule is necessary.

The important point is that “interim” describes the rule’s temporary or transitional character; it does not automatically tell us whether the rule is legally valid.

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3. Ordinary Rulemaking Versus Emergency Rulemaking

The difference can be illustrated simply.

Ordinary rulemaking

Proposal → Notice → Public comment → Agency consideration → Final rule

Emergency rulemaking

Urgent problem → Agency determines ordinary procedure cannot reasonably be followed → Immediate rule → Further procedures or review where required

The emergency procedure sacrifices some procedural speed for immediate governmental action.

That sacrifice is justified only when the law permits it.

This is why emergency rulemaking should be understood as an exception to ordinary procedure, not as an alternative system in which procedural requirements disappear.

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4. The Good-Cause Exception

The most important federal statutory mechanism for bypassing ordinary notice and pre-promulgation participation is the good-cause exception in APA § 553(b)(B).

The provision permits an agency to dispense with notice and the opportunity for public participation when the agency finds that those procedures are:

• impracticable;
• unnecessary; or
• contrary to the public interest.

The agency must incorporate the finding and a brief statement of reasons into the rule issued.

This is an important limitation.

The agency does not merely need to announce:

“This is an emergency.”

It must explain why the circumstances justify dispensing with the ordinary procedure.

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5. What Does “Impracticable” Mean?

The word impracticable generally refers to circumstances in which following ordinary notice-and-comment procedures would be unworkable or infeasible in light of the situation confronting the agency.

Imagine that a dangerous defect is discovered in a widely distributed product and the agency possesses statutory authority to require immediate action.

Waiting several months for ordinary rulemaking could expose people to substantial risks.

In such circumstances, the agency might argue that ordinary pre-promulgation procedures are impracticable.

The essential question is:

Would following ordinary procedures prevent the agency from responding effectively to the problem?

The answer must be grounded in the actual circumstances.

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6. What Does “Unnecessary” Mean?

The term unnecessary addresses a different situation.

Some agency actions may not require the full procedural process because the agency is not making the type of substantive regulatory decision for which public participation is necessary.

For example, certain procedural or organizational rules may already fall outside ordinary notice-and-comment requirements.

An agency therefore cannot automatically invoke “unnecessary” simply because it would prefer to avoid public participation.

The exception must fit the nature of the agency action.

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7. What Does “Contrary to the Public Interest” Mean?

The third category is when notice and comment would be contrary to the public interest.

This can be particularly relevant to emergency situations.

Suppose advance notice of a regulatory action would allow people to exploit a serious regulatory vulnerability.

Or suppose immediate action is necessary to prevent substantial harm.

The agency might conclude that publicly announcing the proposed regulatory response and waiting for comments would itself undermine the public interest.

Again, the agency must explain why.

The public-interest exception is not a blank check.

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8. Emergency Does Not Mean Unlimited

This is perhaps the most important principle in emergency administrative law.

An emergency may justify a different procedure.

It does not automatically enlarge the agency’s substantive authority.

Suppose an agency has authority to regulate transportation safety.

A sudden safety crisis may justify immediate use of that authority.

But the crisis does not necessarily give the agency authority over matters that Congress never placed within its jurisdiction.

The distinction is:

Emergency can affect procedure.

It does not automatically create:

Emergency → unlimited substantive power.

This distinction protects the separation of powers.

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9. Statutory Authority Still Matters

Before issuing an emergency or interim rule, an agency should therefore identify its legal authority.

That authority might come from:

• an organic statute;
• a specific emergency statute;
• a delegation from Congress;
• existing regulatory authority;
• or another applicable federal law.

The agency must determine what the statute actually permits.

A rule that is procedurally justified but substantively unauthorized can still be unlawful.

This principle connects emergency rulemaking with the broader administrative-law doctrine of ultra vires action.

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10. Why Emergency Rules Can Be Necessary

Emergency rules can serve important public purposes.

Imagine the following situations:

Public health

A dangerous contaminant is discovered and immediate regulatory action is necessary.

Financial stability

A sudden market disruption requires temporary restrictions or emergency measures.

Environmental danger

A newly discovered environmental threat requires immediate intervention.

Consumer safety

A dangerous product is causing serious injuries.

National infrastructure

A sudden threat affects critical infrastructure or essential services.

In such situations, waiting for the full ordinary rulemaking process may impose real costs.

Administrative law therefore recognizes that government sometimes needs the ability to act first and complete additional procedures later, when the governing law permits that approach.

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11. The Cost of Speed

But speed has a price.

When an agency acts immediately, it may have less information.

The public may not have had an opportunity to identify:

• factual errors;
• unintended consequences;
• cheaper alternatives;
• technical problems;
• statutory concerns;
• or constitutional issues.

Ordinary notice and comment helps identify these problems before a rule becomes effective.

Emergency procedures can reduce that safeguard.

This creates the fundamental tension:

The faster the government acts, the less opportunity there may be for external scrutiny before the action takes effect.

Emergency rulemaking therefore requires careful justification.

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12. Interim Rules as a Compromise

Interim rules can sometimes function as a compromise between immediate action and ordinary participation.

The agency may issue a rule that takes effect immediately or quickly, while continuing the rulemaking process afterward.

This approach can be particularly useful when:

• immediate regulation is necessary;
• the agency lacks time for full pre-promulgation procedures;
• but additional public participation can occur after the rule takes effect.

The process may therefore look like:

Immediate temporary regulation → public comments → agency evaluation → permanent or revised regulation

The precise procedure depends on the governing law.

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13. Interim Final Rules

The phrase “interim final rule” can be confusing.

It may sound contradictory.

How can something be both interim and final?

The answer is that “final” can refer to the agency’s formal issuance of the rule, while “interim” describes its temporary or transitional role.

An interim final rule may therefore become effective without ordinary pre-promulgation notice and comment, while allowing comments afterward.

The agency may then:

• maintain the rule;
• amend it;
• replace it;
• or withdraw it.

The exact legal consequences depend on the statute and circumstances.

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14. Post-Promulgation Comments

One of the most important features of some emergency and interim rules is post-promulgation public participation.

Instead of:

Comment → Rule

the process may become:

Rule → Comment → Revision

This does not necessarily satisfy every statutory procedural requirement.

Whether post-promulgation comment is sufficient depends on the applicable legal authority and whether the agency properly invoked an exception.

But where the law permits immediate action, later participation can help restore some of the informational and democratic functions ordinarily provided before the rule takes effect.

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15. Why Post-Promulgation Participation Matters

Suppose an agency adopts an emergency rule based on incomplete information.

After the rule becomes effective, affected businesses discover serious compliance problems.

Scientists provide new evidence.

Consumers identify unintended consequences.

State governments report implementation difficulties.

The agency can use that information to reconsider the rule.

This demonstrates an important point:

Emergency rulemaking does not have to mean permanent rulemaking.

An emergency measure may be a first response rather than the final regulatory solution.

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16. Temporary Rules and Sunset Provisions

Some emergency or interim measures are designed to expire after a specified period.

A sunset provision establishes a date or event after which the rule ceases to operate unless further action is taken.

Sunset provisions can provide an important safeguard.

They recognize that emergency powers should not necessarily become permanent simply because the emergency rule was issued.

A temporary rule can therefore be viewed as:

A bridge between an immediate crisis and a more considered regulatory response.

Whether a particular rule contains a sunset provision depends on the governing statute and agency authority.

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17. Emergency Rules and the Administrative Record

Even when an agency acts quickly, documentation remains important.

The agency should ordinarily be able to explain:

• what emergency existed;
• why immediate action was necessary;
• what statutory authority supported the action;
• why ordinary procedures were not feasible;
• what alternatives were considered;
• and why the particular regulatory response was chosen.

These materials can become important if the rule is challenged.

Emergency circumstances do not eliminate the need for reasoned governmental action.

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18. The Requirement of a Reasoned Explanation

The agency’s explanation is especially important when it invokes good cause.

An agency claiming that notice and comment would be impracticable, unnecessary, or contrary to the public interest should identify the factual circumstances supporting that conclusion.

A conclusory statement such as:

“The agency finds that good cause exists.”

may be insufficient if the circumstances do not actually justify the exception.

The agency needs to connect the facts to the statutory standard.

For example:

“Because the newly identified safety risk is already causing serious injuries and the threat is likely to increase during the next thirty days, waiting for the ordinary notice-and-comment period would expose the public to continued harm.”

That is substantially more informative.

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19. Judicial Review of Emergency Rules

Emergency rules can be challenged in court.

A court may examine questions such as:

• Did the agency possess statutory authority?
• Did the agency properly invoke the good-cause exception?
• Were the factual circumstances sufficient?
• Did the agency explain why ordinary procedures were impracticable or contrary to the public interest?
• Was the rule arbitrary or capricious?
• Did the agency exceed the scope of its delegated authority?
• Was the rule sufficiently supported by the administrative record?

Judicial review is therefore an important safeguard against misuse of emergency authority.

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20. Emergency Rulemaking and Arbitrary-and-Capricious Review

Emergency circumstances do not automatically eliminate the requirement of reasoned decision-making.

An agency may have to act quickly.

But it still must act rationally.

Suppose an agency discovers a genuine emergency but chooses a regulatory response completely unrelated to the identified danger.

The emergency itself would not necessarily make that response lawful.

Similarly, an agency may face an emergency but rely on obviously incorrect factual assumptions.

Emergency conditions may affect what the agency reasonably can investigate, but they do not necessarily eliminate judicial review of the agency’s reasoning.

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21. The Role of Judicial Deference

The modern law of judicial review must also be understood after Loper Bright Enterprises v. Raimondo (2024).

Courts no longer apply Chevron’s former framework of mandatory deference to reasonable agency interpretations of ambiguous statutes.

Instead, courts exercise independent judgment when interpreting statutes and determining the limits of delegated authority.

This is particularly important in emergency rulemaking.

An agency cannot simply argue:

“The statute is ambiguous, therefore our interpretation of our emergency authority controls.”

The court must independently determine the meaning of the governing statute.

Emergency circumstances may be relevant to the legal analysis, but they do not eliminate the judiciary’s role in determining the boundaries of statutory authority.

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22. Emergency Rules and Due Process

Emergency action can also raise due-process questions.

Due process is flexible and context-dependent.

In an emergency, the government may sometimes have less ability to provide procedures before acting.

The legal system nevertheless asks whether the procedures provided are appropriate under the circumstances.

The central question may become:

What process is constitutionally required given the urgency, the government’s interests, and the private interests affected?

In some contexts, immediate action followed by later procedural protections may be legally permissible.

In others, greater procedural protection may be required.

Emergency circumstances therefore influence the analysis but do not automatically eliminate due process.

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23. Emergency Rules and the Separation of Powers

Emergency administrative action also raises broader constitutional questions.

The Constitution divides governmental power among different institutions.

Congress establishes statutory authority.

Executive agencies administer the law.

Courts review legal disputes.

When an agency invokes emergency authority, it is exercising governmental power under circumstances in which ordinary constraints may be reduced.

That makes the boundaries of delegated authority particularly important.

The extraordinary nature of an emergency can make ordinary legal limits more—not less—important.

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24. The Risk of Permanent Emergency

One of the deepest problems with emergency government is the possibility that temporary powers become normal powers.

A rule introduced as an emergency measure may remain in effect for years.

A temporary restriction may become institutionalized.

An exceptional procedure may become routine.

This creates what might be called the normalization of exception.

The legal system therefore benefits from mechanisms such as:

• time limits;
• sunset provisions;
• judicial review;
• post-promulgation participation;
• congressional oversight;
• and requirements for reasoned explanations.

These mechanisms help prevent temporary necessity from becoming permanent administrative power.

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25. Emergency Rules and Public Participation

Emergency rulemaking illustrates that public participation is not an absolute value operating independently of every other governmental interest.

Sometimes immediate action can be more important than pre-action participation.

The challenge is to preserve participation as much as possible without preventing necessary government action.

This can produce a continuum:

Full ordinary participation

Proposal → public comment → final rule

Accelerated participation

Shortened process → rapid final rule

Immediate action with later participation

Emergency rule → public comment → revision

Exceptional immediate action

Immediate rule → later review and further procedures

The legally permissible model depends on the governing statute and circumstances.

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26. Emergency Rules and Public Trust

There is also a political and institutional dimension.

People are more likely to accept extraordinary governmental measures when the government explains:

• what happened;
• why immediate action was necessary;
• what authority supports the response;
• how long the measure will last;
• and how affected people can challenge or comment on it.

Transparency therefore becomes particularly important during emergencies.

The less ordinary procedure the government uses, the more important clear explanation can become.

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27. Emergency Rules Are Not the Same as Guidance

Emergency rules should not be confused with agency guidance.

Guidance generally explains existing law or announces agency policy.

An emergency rule, by contrast, may impose binding legal requirements if lawfully issued pursuant to delegated authority.

This distinction matters.

An agency cannot necessarily avoid the requirements governing emergency rulemaking simply by calling a binding regulation “guidance.”

Likewise, an agency cannot transform nonbinding guidance into binding law merely by describing it as an “emergency directive.”

The legal effect depends upon authority, substance, and applicable law.

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28. Emergency Rules and Interpretive Rules

The distinction is also important when an agency claims that an emergency document is merely interpretive.

Suppose an agency publishes an emergency document explaining what an existing regulation means.

If it genuinely interprets existing law, different procedural rules may apply.

But if the agency uses the document to establish new obligations, the legal analysis changes.

The central question remains:

Is the agency interpreting existing law, or creating a new binding requirement?

Emergency circumstances do not erase this distinction.

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29. A Hypothetical Example

Imagine that a federal agency responsible for consumer safety receives credible evidence that a particular product contains a dangerous defect.

The agency has statutory authority to regulate the product.

Under ordinary rulemaking, it might:

1. publish a proposed rule;
2. accept public comments;
3. evaluate the evidence;
4. issue a final regulation.

But the agency concludes that waiting for the ordinary process would expose consumers to serious and immediate harm.

It therefore invokes a statutory emergency authority or applicable good-cause exception and issues an immediate temporary restriction.

The rule explains:

• the evidence supporting the danger;
• the statutory authority;
• why immediate action is necessary;
• why ordinary notice and comment cannot reasonably occur first;
• the duration of the emergency measure;
• and how interested persons can submit information.

The agency then opens a comment period.

After receiving technical evidence from manufacturers, consumer organizations, and scientists, it modifies the rule.

This example illustrates the ideal justification for emergency rulemaking:

Immediate protection first, followed by additional scrutiny and participation.

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30. A Lawyer’s Checklist

When analyzing an emergency or interim administrative rule, ask:

Authority

1. What statute authorizes the agency to act?
2. Does that statute contain specific emergency authority?
3. Is the agency acting within the limits of that authority?

Procedure

4. Does § 553 apply?
5. Did the agency invoke good cause?
6. Which statutory basis did it identify?
7. Was notice and comment bypassed entirely or merely postponed?

Emergency

8. What exactly is the emergency?
9. Is the emergency genuine and sufficiently documented?
10. Why would ordinary procedures be impracticable, unnecessary, or contrary to the public interest?

Substance

11. Does the rule address the identified emergency?
12. Does it impose new legal obligations?
13. Are those obligations authorized by statute?

Duration

14. Is the rule temporary?
15. Does it contain a sunset provision?
16. What happens after the emergency ends?

Participation

17. Is post-promulgation comment available?
18. Can affected parties submit evidence?
19. Will the agency reconsider the rule?

Judicial review

20. Is the rule final agency action?
21. Is the agency’s good-cause determination adequately explained?
22. Is the rule arbitrary or capricious?
23. Did the agency exceed its statutory authority?
24. Are constitutional issues implicated?

This checklist provides a useful starting point for evaluating emergency administrative action.

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31. Frequently Asked Questions

What is an emergency administrative rule?

It is a rule adopted under circumstances in which an agency determines that immediate or unusually rapid regulatory action is necessary and the governing law permits that approach.

Does an emergency automatically allow an agency to skip notice and comment?

No. The agency must have a lawful basis for doing so. Under the federal APA, § 553(b)(B) contains a good-cause exception when the required statutory conditions are satisfied.

What is good cause?

Under § 553(b)(B), an agency may dispense with ordinary notice and pre-promulgation participation when it finds that those procedures are impracticable, unnecessary, or contrary to the public interest and provides the required explanation.

What is an interim rule?

An interim rule is generally a temporary or transitional regulation intended to operate before a permanent regulatory solution is established or while further procedures occur.

What is an interim final rule?

It is a rule that is formally issued as final agency action while serving an interim or temporary regulatory function. Depending on the circumstances, it may become effective before ordinary notice and comment and permit comments afterward.

Can the public comment on an emergency rule?

Sometimes. An agency may provide post-promulgation opportunities for public participation, and some statutes or regulatory frameworks may require particular procedures.

Can emergency rules be challenged in court?

Yes, subject to applicable jurisdictional and reviewability requirements.

Does an emergency give an agency unlimited power?

No. Emergency authority remains bounded by statutes, the Constitution, and judicial review.

Can an emergency rule impose binding legal obligations?

It can, if the agency possesses statutory authority to issue the rule and satisfies the applicable procedural and substantive requirements.

Can an agency use an emergency rule to create authority Congress never gave it?

Generally, no. Emergency circumstances do not automatically expand an agency’s substantive jurisdiction.

Can emergency rules become permanent?

They can sometimes remain in effect longer than originally expected, but their continuation depends on the governing legal framework. Temporary or interim rules may also be replaced, amended, or allowed to expire.

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Key Takeaways

• Emergency administrative rules allow agencies to respond rapidly when ordinary rulemaking may be too slow.
• Emergency authority must come from law; an emergency does not itself create unlimited governmental power.
• APA § 553(b)(B) contains a federal good-cause exception to ordinary notice and pre-promulgation participation.
• Good cause may exist when ordinary procedures are impracticable, unnecessary, or contrary to the public interest.
• An agency invoking good cause must explain the basis for doing so.
• Interim rules are generally temporary or transitional in character.
• An interim final rule may become effective before ordinary public participation and allow comments afterward, depending on the applicable legal framework.
• Post-promulgation participation can help provide information that was unavailable when immediate action was taken.
• Emergency rules can be subject to judicial review.
• Courts may examine statutory authority, procedural compliance, agency reasoning, and arbitrary-and-capricious concerns.
• Loper Bright means that courts independently interpret the statutes defining agency authority rather than applying Chevron’s former mandatory deference framework.
• Emergency powers create a risk that temporary measures will become permanent, making oversight and time limitations particularly important.
• The fundamental principle is simple: emergency circumstances may justify faster government action, but they do not suspend the rule of law.

Conclusion

Emergency and interim administrative rules reveal one of the central tensions in administrative law.

Government sometimes cannot afford to wait.

A serious threat may require immediate action.

A regulatory agency may have only days—or perhaps hours—to respond to circumstances that could otherwise cause substantial harm.

A legal system that required every government action to proceed through the slowest possible procedure would sometimes be incapable of protecting the public effectively.

But the opposite extreme is equally dangerous.

If every agency could declare an emergency whenever ordinary procedures were inconvenient, notice and comment would become optional.

The rule of law would weaken.

Emergency rulemaking therefore represents a carefully constructed compromise.

Urgency can justify procedural flexibility.

But urgency does not automatically create substantive authority.

An agency must still identify its legal power.

It must still explain why immediate action is necessary.

It must still remain within the boundaries established by Congress and the Constitution.

And where the law permits or requires further participation, affected parties should have an opportunity to provide information and challenge the agency’s assumptions.

The deeper lesson is that administrative law does not treat emergencies as moments when law disappears.

Rather, it asks how government can respond to extraordinary circumstances while remaining a government of law.

The best emergency rule is therefore not simply the fastest rule.

It is the rule that responds quickly and lawfully, protects the public without exceeding delegated authority, and preserves as much transparency, participation, and accountability as the circumstances permit.