Students with Visas not even a threat
We issue 200,000 student visas a year. One of the hijackers had an F-1 student visa. The majority had tourist, business, or visit visas.
So if you are looking to protect the country, a more logical thing to do is ban (1) male (2) Saudi Arabians (3) between the ages of 21 and 43 (4) religious [...]