FILE - In this Feb. 25, 2011, file photo, Khalid Ali-M Aldawsari, accused of buying chemicals and equipment to build a weapon of mass destruction, is escorted to a court appearance in Lubbock, Texas. The former student from Saudi Arabia convicted in a failed U.S. bomb plot could be sent to prison for life when he is sentenced Tuesday, Nov. 13, 2012 in in an Amarillo courtroom. (AP Photo/Lubbock Avalanche-Journal, Zach Long, File)

Associated Press
FILE - In this Feb. 25, 2011, file photo, Khalid Ali-M Aldawsari, accused of buying chemicals and equipment to build a weapon of mass destruction, is escorted to a court appearance in Lubbock, Texas. The former student from Saudi Arabia convicted in a failed U.S. bomb plot could be sent to prison for life when he is sentenced Tuesday, Nov. 13, 2012 in in an Amarillo courtroom.  (AP Photo/Lubbock Avalanche-Journal, Zach Long, File)
FILE - In this Feb. 25, 2011, file photo, Khalid Ali-M Aldawsari, accused of buying chemicals and equipment to build a weapon of mass destruction, is escorted to a court appearance in Lubbock, Texas. The former student from Saudi Arabia convicted in a failed U.S. bomb plot could be sent to prison for life when he is sentenced Tuesday, Nov. 13, 2012 in in an Amarillo courtroom. (AP Photo/Lubbock Avalanche-Journal, Zach Long, File)
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