Supreme Court upholds Pentagon's cancellation of 9/11 defendants' plea deals

The Supreme Court has rejected an appeal by Khalid Sheikh Mohammed and two co-defendants seeking to revive plea agreements that were cancelled by then-Defense Secretary Lloyd Austin in 2024. The decision upholds the defense secretary's legal authority to withdraw the agreements and clears the path for a military commission trial currently scheduled for 2028.

Quick Facts

Supreme Court denied appeals challenging cancellation of plea deals
Plea agreements negotiated in 2024 and approved by military prosecutors
Defense Secretary Lloyd Austin revoked the agreements
Military judge ruled Austin's nullification unlawful
U.S. Court of Appeals for D.C. Circuit ruled Austin had authority to withdraw deals

The Supreme Court on Monday declined to review former Defense Secretary Lloyd Austin's 2024 decision to cancel plea agreements with Khalid Sheikh Mohammed and two other defendants accused of orchestrating the September 11 attacks. By denying the appeals, the court left in place an August ruling from the U.S. Court of Appeals for the District of Columbia Circuit that found Austin had "indisputably" possessed the authority to withdraw the agreements, which had removed the death penalty from the case.

The three defendants—Mohammed, Mustafa al-Hawsawi, and Walid bin Attash—have been held at Guantanamo Bay since 2006 and charged before a military commission with crimes related to the 9/11 attacks, five of which carry capital punishment. Under the plea agreements negotiated in 2024 and approved by military prosecutors and the Pentagon's Convening Authority, the men would have pleaded guilty to all charges and received life sentences without parole. Austin revoked the deals shortly after they were announced, asserting that such a significant decision concerning an attack as grave as 9/11 should rest with the defense secretary.

A military judge initially ruled in November 2024 that Austin's nullification was unlawful and the agreements were valid and enforceable. A military appeals court subsequently agreed that the defense secretary could not rescind the deals once defendants had begun performing their terms. However, the D.C. Circuit reversed this decision, determining that Austin had acted within legal bounds. The Trump administration has continued to defend Austin's decision.

The Supreme Court's denial removes a legal barrier to trial proceedings, with a trial date currently set for June 2028, though legal experts and court observers have questioned whether this timeline is realistic given outstanding issues. Among the central delays have been prolonged disputes over the admissibility of evidence obtained during the defendants' detention at secret CIA prisons, where they were subjected to enhanced interrogation techniques before their 2006 transfer to Guantanamo Bay. The plea agreements had drawn mixed reactions from 9/11 victims' families and advocacy groups—some supported closure through a negotiated resolution, while others advocated for full trial proceedings.

Justice Brett Kavanaugh recused himself from consideration of the case. A fourth alleged plotter, Ali Abdul Aziz Ali, was not involved in the appeal.

Topics

Politics World

#Guantanamo Bay #Lloyd Austin #Supreme Court #Khalid Sheikh Mohammed #military commission #death penalty #9/11 #plea deal

Entities

Why This Matters

The Supreme Court's refusal to review the case removes a final legal barrier to trial proceedings for three defendants charged with orchestrating the 9/11 attacks. The ruling affirms the Defense Secretary's constitutional authority to withdraw negotiated plea agreements even after military prosecutors and the Pentagon's Convening Authority had approved them. With trial now scheduled for June 2028, the case may proceed, though disputes over admissibility of evidence obtained through enhanced interrogation techniques remain unresolved. The outcome affects the trajectory of one of the longest-running U.S. military commission cases and carries implications for the separation of powers between the Defense Department and prosecutorial authority in military justice proceedings.

Timeline & Sources

Sep 11, 2001

Wire

September 11 attacks; hijacked planes crash into World Trade Center, Pentagon, and Pennsylvania field

Jan 1, 2003

Wire

Khalid Sheikh Mohammed, Mustafa al-Hawsawi, and Walid bin Attash captured

Jan 1, 2024

Wire

Defense Secretary Lloyd Austin revokes plea agreements

Oct 19, 2026

Wire

Supreme Court denies appeals, declining to review Austin's decision