In Beslan the Chechens had used jobs as construction workers to conceal weapons and explosives within the walls of the school that they later retrieved so that they could massacre the children. Given the large number of illegal aliens in the construction industry America is vulnerable to just such an attack.

In NY we should have the UN structure monitored for radiological substances, to an extant that can be done remotely. The possible use of mosques for weapons storage is a serious issue.