a. Army force structure is strained, having ARNG fill these spaces means Active Army folks can get into units that are on rotational deployments.
b. Terrorist ops means first you tighten the borders, then you start looking for the folks that got in, root them out, and either ship them home or change their minds....resocilalization while retained. Oh yeah, and the folks you retain get "invited" to provide information about their sources, links to home, and co-workers/cohorts.
c. The greatest vulnerability of a free open society is its own freedom of speech and freedom of actions. Those that aim to do us bad will use these same freedoms we protect as a way to attack. They call them sleepers......quietly in.......quietly and subtly influence, incite others to do their deeds. I think Uncle Sam is opening up more hotels for the folks they can identify in this role.
Now if we can get them to open a detention facility beach side at Cabo San Lucas, I might be tempted to go get a robe and start bowing at 3 pm ech day.