Seven of the 19 Islamic terrorists who hijacked commercial planes on September 11, 2001 and killed nearly 3,000 Americans were able to remain in the United States after overstaying their visas thanks to a wide open loophole that has yet to be closed.
In total, all 19 terrorists arrived in the U.S. legally as 16 secured tourist visas and three obtained business and student visas. Eventually, the September 11 attacks they executed left thousands of Americans dead and more than 6,000 others injured.
Seven of the 19 terrorists overstayed their visas either before the attacks or at the time of the attacks. Despite U.S. immigration law requiring their detainment and potential deportation, none were detained or deported.
The seven terrorists who overstayed their visas include:
Hani Hasan Hanjour of Saudi Arabia Nawaf al-Hamzi of Saudi Arabia Mohamed Atta of Egypt Satam al-Suqami of Saudi Arabia Waleed al-Shehri