On June 10, 2019, the Supreme Court denied certiorari in a case in which the D.C. Circuit held that the United States could continue to detain an individual at Guantánamo Bay until the cessation of the hostilities that justified his initial detention, notwithstanding the extraordinary length of the hostilities to date.Footnote ¹ The case, Al-Alwi v. Trump, arises from petitioner Moath Hamza Ahmed Al-Alwi's petition for a writ of habeas corpus challenging the legality of his continued detention at the United States Naval Base at Guantánamo Bay.Footnote ² The Supreme Court's denial of certiorari was accompanied by a statement by Justice Breyer observing that “it is past time to confront the difficult question” of how long a detention grounded in the U.S. response to the September 11 attacks can be justified.Footnote ³

A citizen of Yemen, Al-Alwi was around twenty-five years old when he was captured in Pakistan in late 2001.Footnote ⁴ Among other things, he was accused of participating in Taliban military training, supporting Taliban forces on the battlefield, and continuing to support the Taliban after the September 11, 2001 terrorist attacks.Footnote ⁵ He was detained pursuant to the Authorization for Use of Military Force passed by Congress shortly after the attacks (the 2001 AUMF), and he was transferred to Guantánamo Bay in 2002.Footnote ⁶ The 2001 AUMF authorizes the president to “use all necessary and appropriate force against those nations, organizations, or persons he determines planned, authorized, or aided the terrorist attacks that occurred on September 11, 2001, or harbored such organizations or persons.”Footnote ⁷

In 2005, Al-Alwi filed his first petition for a writ of habeas corpus, challenging his classification as an enemy combatant and his detention. The federal district court did not decide Al-Alwi's case until 2008, after the Supreme Court had held in Boumediene v. Bush that individuals detained at Guantánamo Bay were entitled to challenge their detention through habeas corpus petitions.Footnote ⁸ The district court denied his petition and in 2011, the D.C. Circuit affirmed.Footnote ⁹ In October 2015, an administrative tribunal, which was established to ensure that each prisoner's continued detention was justified, determined that Al-Alwi's continued detention was necessary.Footnote ¹⁰ There appear to be no plans to either try Al-Alwi before a military commission or to transfer him to a third country; rather, his continued detention is justified by the United States on the basis of the laws of war.Footnote ¹¹

In May 2015, Al-Alwi filed his habeas corpus petition in the case at hand.Footnote ¹² He did not challenge the prior determination that his initial detention was lawful, but he claimed that his continued detention was not authorized.Footnote ¹³ More particularly, Al-Alwi argued that the government's authority to detain him based on the traditional laws of war had “unraveled” because of the unconventional nature of the conflict, or in the alternative, that the government's authority to detain him had expired because the original conflict in Afghanistan had ended.Footnote ¹⁴

Al-Alwi's arguments drew upon language from the opinion of a plurality of Supreme Court justices in the 2004 decision of Hamdi v. Rumsfeld. In that case, the plurality interpreted the 2001 AUMF to authorize the detention of combatants, but it expressed some concern about the potential duration of the conflict.Footnote ¹⁵ It recognized the possibility that if “the Government does not consider this unconventional war won for two generations, and if it maintains during that time that Hamdi might, if released, rejoin forces fighting against the United States, then the position it has taken through the litigation of this case suggests that Hamdi's detention could last for the rest of his life.”Footnote ¹⁶ The plurality then observed that “we understand Congress’ grant of authority for the use of ‘necessary and appropriate force’ to include the authority to detain for the duration of the relevant conflict, and our understanding is based on longstanding law-of-war principles.”Footnote ¹⁷ Notably, the plurality added that “[i]f the practical circumstances of a given conflict are entirely unlike those of the conflicts that informed the development of the law of war, that understanding may unravel.”Footnote ¹⁸

On February 22, 2017, the federal district court denied Al-Alwi's petition, finding by a preponderance of the evidence that he was lawfully detained as an enemy combatant.Footnote ¹⁹ The court found that “the record establishes clearly that both Congress and the President agree that the military is engaged in active hostilities in Afghanistan”Footnote ²⁰ and that “this case does not present a situation in which petitioner's detention would be inconsistent with the ‘clearly established principle of the law of war that detention may last no longer than active hostilities’ or the rationale underlying that principle.”Footnote ²¹

On August 7, 2018, the D.C. Circuit affirmed the district court's decision, upholding Al-Alwi's continued detention.Footnote ²² Like the district court, the circuit court rejected Al-Alwi's argument that changes in the circumstances of the conflict warranted his release.Footnote ²³ The court was not persuaded by Al-Alwi's argument that the conflict's unprecedented “duration, geographic scope, and variety of parties involved” rendered inapplicable the principle that detention may last until the end of hostilities.Footnote ²⁴ The court observed that neither the 2001 AUMF nor a related subsequent statute “places limits on the length of detention in an ongoing conflict.”Footnote ²⁵ The court observed:

The D.C. Circuit also rejected Al-Alwi's argument that, although the U.S. military is still operating in Afghanistan, the current conflict is not the same as the one in which he was captured.Footnote ²⁷ Al-Alwi pointed to the transition from Operation Enduring Freedom to Operation Freedom Sentinel in 2014, as well as the reduction of the U.S. role in Afghanistan.Footnote ²⁸ To the court, however, “[n]othing in the text of the [2001] AUMF … suggests that a change in the form of hostilities, if hostilities between the relevant entities are ongoing, cuts off [2001] AUMF authorization.”Footnote ²⁹ Moreover, the court noted that the “Executive Branch represents that armed hostilities between the United States forces and these entities persist,” and it concluded that the political branches have the primary authority to determine when hostilities have ended.Footnote ³⁰

Al-Alwi then sought review from the Supreme Court, arguing that the D.C. Circuit did not sufficiently consider whether the unprecedented nature of the conflict had altered the government's detention authority.Footnote ³¹ His petition observed that, if the hostilities are viewed as a single conflict, it has lasted for seventeen years, making it the longest declared conflict in American history and longer than many conflicts under which the law of war developed.Footnote ³² Aside from the unprecedented length of the conflict, the fighting has expanded beyond Afghanistan and beyond the Taliban and Al Qaeda, as enemies have “regrouped and dissolved” since the conflict began and the 2001 AUMF was passed, making the conflict more indeterminate than previous wars.Footnote ³³ Al-Alwi argued that the Supreme Court's guidance in Hamdi called upon the Court to evaluate whether these circumstances warrant judicially enforceable limits on the duration of military detention:

Al-Alwi also argued that the Supreme Court should determine whether the judiciary has the authority to make an independent determination that a particular conflict has ended since “[i]f the judiciary yields to executive declarations in the face of contrary facts, then habeas is no check at all.”Footnote ³⁵

On June 10, 2019, the Supreme Court denied Al-Alwi's petition for a writ of certiorari.Footnote ³⁶ Justice Breyer issued a statement respecting the denial of certiorari, arguing that the time to reevaluate the government's detention authority has arrived:

Of the forty current detainees at Guantánamo Bay, twenty-three, like Al-Alwi, are currently held in law-of-war detention and not recommended for transfer.Footnote ³⁸ All have been there for at least ten years.Footnote ³⁹ Many of the other detainees have also challenged their detention.Footnote ⁴⁰ In 2018, the Center for Constitutional Rights filed a petition for a writ of habeas corpus on behalf of eleven detainees.Footnote ⁴¹ The petitioners in that case argued that their due process rights have been violated in many ways, including by the effective cessation by President Trump of case-by-case determinations with respect to the potential release, and they also made arguments similar to Al-Alwi's with respect to the duration of detention justified under the 2001 AUMF.Footnote ⁴² Sharqawi Al Hajj, one of the detainees who joined the lawsuit, observed that “[t]he government says my detention is legal because of the indefinite war against terrorism. When terrorism ends, the war will end. So, never.”Footnote ⁴³ News reporting indicates that the Department of Defense is preparing plans for having the detention center at Guantánamo operational for an additional twenty-five years.Footnote ⁴⁴

Trump and Congress have also taken action that could affect the future of the Guantánamo Bay detention facility. In January 2018, Trump signed an executive order signaling his support for the detention facility at Guantánamo Bay, both in terms of its continued operation and as a place to which the United States could potentially bring new detainees.Footnote ⁴⁵ Additionally, recent versions of the annual National Defense Authorization Act (NDAA) have contained provisions limiting the president's authority to curtail operations at Guantánamo Bay or to transfer detainees to the United States.Footnote ⁴⁶ With the House of Representatives passing to Democratic control in 2019, it is unclear whether different provisions will be included in the NDAA for 2020, which is likely to pass Congress in the fall of 2019. The version passed by the House in July of 2019 differed from previous NDAAs with respect to Guantánamo in several ways, among them: omitting a provision prohibiting the use of funds for the transfer of Guantánamo detainees to the United States; including a provision prohibiting the use of funds for the transfer of new detainees to Guantánamo; and adding a provision expressing Congress's sense that “the United States has an ongoing obligation to provide medical care to individuals detained” at Guantánamo, “meeting appropriate standards of care.”Footnote ⁴⁷ The version passed by the Senate over the summer of 2019 did not include these provisions,Footnote ⁴⁸ and as of mid-September 2019, the two chambers of Congress had not agreed on a final version. The future of these provisions—as well as of more ambitious efforts to repeal the 2001 AUMFFootnote ⁴⁹—remains to be seen.