Emergency Powers

What are emergency powers?

Emergency powers are extraordinary authorities a government claims in order to respond to war, rebellion, natural disaster, economic collapse or other crises that ordinary lawmaking cannot handle quickly enough. They are meant to protect a constitutional order, but because they concentrate power and suspend normal limits, they have also been a common route to its abuse.

Constitutions deal with this tension in two broad ways. Some, like Korea's, write emergency powers into the text with detailed conditions and legislative checks. Others, like the U.S. Constitution, contain no general emergency clause and leave the matter to statutes, to the political branches and to the courts. Both approaches rely on the ideas behind separation of powers and checks and balances.

In a crisis, power tends to flow to whoever can act fastest. The central problem of emergency powers is giving the government enough power to meet the crisis while making sure that power does not outlast it.

Emergency powers in the United States

• The Constitution: the only explicit emergency provision is the Suspension Clause in Article I, which allows the privilege of habeas corpus to be suspended "when in Cases of Rebellion or Invasion the public Safety may require it." President Lincoln suspended it during the Civil War, and Congress later authorized suspension in 1863.
• Ex parte Milligan (1866): the Supreme Court held that civilians could not be tried by military commissions where civilian courts were open and functioning, even in wartime.
• Youngstown Sheet & Tube Co. v. Sawyer (1952): the Court ruled 6 to 3 that President Truman could not seize steel mills during the Korean War without authority from Congress. Justice Robert Jackson's concurrence described three zones of presidential power, strongest when acting with Congress's approval and weakest when acting against its will, and it remains the standard framework.
• The National Emergencies Act (1976): passed after Congress found that several declared emergencies had stayed in force for decades, it requires the President to declare an emergency formally, specify the statutory powers used and renew the declaration each year, and lets Congress end an emergency by joint resolution.
• The International Emergency Economic Powers Act (1977): it lets the President regulate economic transactions to deal with unusual and extraordinary foreign threats once a national emergency is declared, and it is the basis for most U.S. sanctions programs.

Korea takes the opposite approach and spells out emergency powers in its Constitution. A Korean case analysis that tests a hypothetical emergency decree against Article 76 step by step, covering the situation requirement, National Assembly approval and the limits on content and form, is in When a Presidential Emergency Decree Is Unconstitutional in Korea: Substantive and Procedural Requirements of Article 76, National Assembly Approval and Limits on Content. A related case on a president's power to return bills while the Assembly is in recess is in Critique of a Hypothetical Case on the Structure of Government: Presidential Veto During Recess, Veto on Policy Grounds, and Promulgation and Entry into Force of Statutes, and the basic principles of the Korean Constitution are covered in Basic Principles of the Korean Constitution: Popular Sovereignty, Liberal Democracy, Rule of Law, Welfare State and International Peace.

Emergency powers in Korea

Article 76 of the Korean Constitution allows the President to issue emergency financial and economic orders in a grave financial or economic crisis when there is no time to wait for the National Assembly to convene, and emergency decrees in a major hostile situation affecting national security when the Assembly cannot convene. Both have the force of law, must be reported to the Assembly without delay and lose effect if it does not approve them. Article 77 allows martial law in war, armed conflict or a comparable national emergency, but the President must lift it if a majority of all Assembly members demand it.

These limits grew out of history. The Yushin Constitution of 1972 let the president issue "Emergency Measures" suspending basic rights with no legislative or judicial check, and in 2013 the Constitutional Court held Emergency Measures No. 1, 2 and 9 unconstitutional. On December 3, 2024, the President declared martial law; the National Assembly voted to demand its lifting within hours, and it was lifted. The Assembly then impeached the President, and on April 4, 2025 the Constitutional Court unanimously removed him from office. Courts in both countries review emergency measures through judicial review.

When you study an emergency powers question, start by asking whether there is really an emergency. Checking the triggering conditions, the purpose, the legislature's role and judicial review in turn will show whether a measure is a legitimate response or an abuse.

Does the U.S. Constitution give the President emergency powers?

Not in general terms. Apart from the habeas corpus clause, presidents rely on powers delegated by Congress in statutes such as the National Emergencies Act, and courts judge their actions using the Youngstown framework.

How many national emergencies are in effect in the U.S.?

Usually several dozen at any time, because declarations under the National Emergencies Act are often renewed year after year, a practice critics say undercuts the act's purpose.

Can Korea's legislature end martial law?

Yes. Under Article 77(5) of the Korean Constitution, the President must lift martial law when a majority of all members of the National Assembly demand it.

References

1. Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579 (1952). Justia
2. National Emergencies Act, 50 U.S.C. §§ 1601–1651. Legal Information Institute
3. 대한민국헌법 (Constitution of the Republic of Korea). Korea Law Information Center