I believe we should convert all our immigration visas to religious refugee visas for Christians and Jews throughout the world. No one else need apply. We would get the best, and we wouldn't want the rest.
Citizenship has to mean something. If someone embraces the killing of innocent people anywhere in the world on the basis of denying them practice of ANY of the freedoms guaranteed in the US constitution, I will joyfully help them GET THE HELL OUT of my country!!!