Howdy Matt - will you build a Muslim registry if Trump orders it or Congress passes it?
I don't support Trump or the unconstitutional American deep state, but you realize there is already a Muslim registry right?
In fact there are probably several competing implementations in various intelligence agencies, with substantially overlapping contents. Probably almost every agency has the capability to run
select first_name, last_name, home_address from us_residents where religion = 'muslim';
And get largely right answers. Similarly, there is already a border wall with Mexico.