Authorization for Use of Military Force (AUMF)

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US Marine Corps hang barbed wire

U.S. Military Action in Mexico: Almost Certainly Illegal, Definitely Counterproductive

U.S. military action in Mexico would not only be illegal, it would sabotage Trump’s stated immigration policy priorities and could lead to retaliation against Americans.
Marco Rubio on stage at Trump Rally

Questions for Senators (and Journalists) to Ask Secretary of State Nominee Marco Rubio

Experts suggest questions for the Senate Foreign Relations Committee's confirmation hearing for Trump's pick for Secretary of State, Sen. Marco Rubio.
WASHINGTON, DC - AUGUST 01: U.S. President Joe Biden speaks from the Blue Room balcony of the White House on August 1, 2022 in Washington, DC. Biden announced that over the weekend, U.S. forces launched an airstrike in Afghanistan that killed al-Qaeda leader Ayman Al-Zawahiri. Zawahiri, 71, took over leadership of al-Qaeda in 2011, shortly after American forces killed Osama bin Laden. The president said there were no civilian casualties. (Photo by Jim Watson-Pool/Getty Images)

A Presidential Proclamation to End the Iraq War: Unilateral Executive Action to Defang a Zombie AUMF

President Biden should proclaim the conflict authorized by the 2002 resolution to be over and determine that it is no longer “necessary and appropriate” to use force for the…
U.S. Secretary of State Antony Blinken testifies during a House Foreign Affairs Committee hearing on Capitol Hill March 23, 2023 in Washington, DC.

Key Takeaways from September 28 House Foreign Affairs Committee Hearing on AUMF Reform

The HFAC hearing clarified the shallowness of the Biden administration’s conception of AUMF reform, divisions between the political branches and within the House, and the risks…
The dome of the US Capitol Building against a blue sky.

Why “Associated Forces” Should be Kept Out of Any New AUMF

Any new AUMF must be limited to only the clearly specified non-state armed groups Congress has voted to authorize war against. Otherwise, Congress risks hard-wiring a multi-front…
The U.S. Capitol in Washington, D.C.

Questions for Congress to Ask the Biden Administration at the AUMF Hearing

Congress should seek to determine how the executive branch interprets and relies on the 2001 AUMF and where the administration stands on proposed reforms that have been widely…
The U.S. Capitol in Washington, D.C.

Analyzing Previously Undisclosed Use of Force Reports: Challenges of Congressional Oversight of the War on Terror

The executive branch, through noncompliance and defiance, has delayed providing Congress with sufficient information on the war on terror.

How the Expansion of “Self-Defense” Has Undermined Constraints on the Use of Force

Legal Scholar Oona Hathaway examines how expansive U.S. interpretations of "self-defense" have shaped international law.

Finally Ending America’s Forever War, Part II: Prescription

Leading legal scholar Harold Hongju Koh presents a long-term strategy for ending the "war on terror."

Introduction to Symposium: Ending Perpetual War

Marking the 22nd anniversary of 9/11, our new Symposium reflects on the enduring legacies of the "war on terror" and prospects for finally leaving the war path.

Finally Ending America’s Forever War, Part I: Diagnosis

On the 22nd anniversary of 9/11, leading legal scholar Harold Hongju Koh offers a grim diagnosis of how we got here and the challenges ahead.
STRAIT OF HORMUZ (Aug. 6, 2023) An L3 Harris Arabian Fox MAST-13 unmanned surface vessel, front, the U.S. Coast Guard fast response cutter USCGC Charles Moulthrope (WPC 1141), the dry cargo and ammunition ship USNS Amelia Earhart (T-AKE 6) and the guided-missile destroyer USS Thomas Hudner (DDG 116) transit the Strait of Hormuz, Aug. 6, 2023. (U.S. Navy photo)

Renewed Tensions in the Persian Gulf: Further War Powers Lessons from the Tanker War

The possibility of unilateral use of force spiraling into conflict in the Middle East should generate a sense of urgency on Capitol Hill for tackling war powers reform.
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