Who comes/visits here is a question of immigration policy and Congress. It is not a question of constitutional law.

Per Anand’s sentiments, I like that people from all over the planet wish to come here. It’s good for the economy. If their babies are born here, welcome fellow citizens!

Not a threat.

Run for Congress Ned and introduce a law that pregnant women cannot enter US until post birth. Then you can peacefully sleep at night …. with your firearms next to your pillow.