 He was also linked with the 2009 Christmas bombing over Detroit, as suspected bomber Umar Farouk Abdulmutallab visited him to discuss the plot and the workings of the bomb.Al-Quso was from the same tribe as radical U.S.-born cleric Anwar al-Awlaki, who had an operational role in the attack.On 7 December 2010 the United States Department of State designated al-Quso as a Specially Designated Global Terrorist under Executive Order 13224 which "blocks all al-Quso’s property interests subject to U.S. jurisdiction and prohibits U.S. persons from engaging in transactions for the benefit of al-Quso."