Abu Bakr Alahdal

The United States has held a total of 115 Yemeni citizens at Guantanamo Bay, forty-two of who have since been transferred out of the facility. Only Afghanistan and Saudi Arabia had a greater number of their citizens held in the Guantanamo Bay detention camp. By January 2008, the Yemenis in Guantanamo represented the largest group of detainees.

Among the Yemeni detainees currently held (as of November 2015), 44 are recommended for transfer out of the facility, while twenty-three are being held indefinitely and are not recommended for transfer. Only Ali Hamza Ahmad Suliman al Bahlul has been convicted by military tribunal, and his conviction has been vacated on appeal. Two Yemeni detainees are awaiting trials by military commissions, Ramzi bin al-Shibh and Walid Bin Attash.

A delegation of Yemeni officials visited Guantanamo shortly after it opened in January 2002.

On March 12, 2008 Mark Falkoff of the Center for Constitutional Rights issued a call for the repatriation of the Yemeni detainees, reporting that 95 Yemenis remained in detention, and they now constituted more than a third of the total detainee population. Falkoff wrote that the delay in his release is due to a failure of the USA and Yemeni governments to reach an agreement on the security arrangements for the detainees, following their repatriation. By contrast, almost all the 133 Saudi detainees in Guantanamo had been sent home in 2006 and 2007.

On December 25, 2009, Nigerian Umar Farouk Abdulmutallab allegedly tried to set off a suicide bomb on Northwest Airlines Flight 253. By December 27, 2009, responding to rumors that Abdulmutallab had confessed to being trained and equipped in Yemen, various American politicians, including Joe Lieberman, Pete Hoekstra, Peter T. King and Bennie Thompson, called for American President Barack Obama to halt plans to repatriate the Yemenis.

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