From the Washington Times: A paper found in the rented apartment of one Moroccan terrorist said, “We must develop immigration into Western countries as the path to the glory of Islam and the destruction of the Godless pagans.”
I’m actually fine with not letting non-citizens into the country. Among other things, you can’t fit six billion people inside the 48 contiguous states and the wealth and freedom that a libertarian government would produce over time would cause nearly everyone to want to move there. Look how many people want to come to America as it is. But people and capital have to be free to leave it anytime and anyhow they want.