The US high court reviewed whether the men, who say they were held after the Al-Qaeda attack based solely on their identity as Arab Muslims, had the right to sue top US officials including then-attorney general John Ashcroft and Federal Bureau of Investigation director Robert Mueller, for their allegedly illegal detention. WASHINGTON: Muslims in the United States who were rounded up and detained in the immediate aftermath of the September 11 , 2001 attacks took their case before the US Supreme Court .