It’s not practical to ban by religion. We should, but it will not be easy to do. Instead, ban all permanent residency from certain majority muzzard countries. Travel and study by visa only.
How many find a way to disappear into the woodwork with expired visas?
Here’s how. Any Muslim that will not repudiate the concept of Sharia law in this country is committing sedition:
18 U.S.C. § 2384 : US Code - Section 2384: Seditious conspiracy
If two or more persons in any State or Territory, or in any place subject to the jurisdiction of the United States, conspire to overthrow, put down, or to destroy by force the Government of the United States, or to levy war against them, or to oppose by force the authority thereof, or by force to prevent, hinder, or delay the execution of any law of the United States, or by force to seize, take, or possess any property of the United States contrary to the authority thereof, they shall each be fined under this title or imprisoned not more than twenty years, or both.