And still the borders are wide open. If there's an attack and it can be shown that they walked across, the reaction will be volcanic.
The 9-11 terrorists entered the US legally.
For starters, the terrorists were here legally, with legitimate, proper documentation. Hell, Atta was mailed a notice by the INS that his work visa was about to expire 3 months after 9/11.
Wanna bet. The Libs will not allow it. The ACLU will scream bloody murder (pun intended).