May 20, 2001: 9/11 Hijacker Overstays US Visa, Remains Illegally in US until 9/11

9/11 hijacker Satam Al Suqami becomes an illegal overstay on this day. He entered the US on April 23 (see April 23-June 29, 2001) and was allowed to stay for 30 days, so, according to the 9/11 Commission, his permission to remain in the US expires on this day. He remains in illegal status until 9/11. [9/11 Commission, 8/21/2004, pp. 8, 21, 23 ] Hijackers Mohamed Atta and Marwan Alshehhi also overstayed their visas at times (see January 10, 2001 and January 18, 2001). At least one more of the hijackers, Khalid Almihdhar, lied on his visa application form, meaning he was in the US illegally (see August 29, 2001).