Paul has the right idea here. Bar them from even getting visas.
Via The Hill:
Sen. Rand Paul (Ky.), a GOP presidential candidate, is proposing a bill to halt visas from all countries with “significant jihadist movements” in light of Friday night’s terror attacks in Paris for which Islamic State in Iraq and Syria has claimed responsibility.
“The best way to defend the country from attackers that don’t really have an army, but come here as individuals, is to prevent their access into this country,” Paul told reporters on Monday.
“It is about time, and I think Paris should wake us up to the fact that we can’t just let anyone come to this country,” he added.Paul initially signaled that the legislation would extend to all refugees, but his office clarified that moratorium only extends to the approximately 30 high-risk countries that Paul said have “significant jihadist movements.”