As commonone pointed out, they have to be legal under federal law, be able to carry firearms under federal law, etc. In which case, I have no problem with it. If they are entitled to work in this country, have all their papers in order, then fine.

I went through this with 1poorlady. Granted, almost 30 years ago. But she couldn't work until we filed the papers, got them approved, and she received her employment authorization. Once someone has done that, they should be allowed to work.

Did you know that non-US citizens can serve in our military? I know for a fact that Filipino nationals served in the US Navy, and probably still do. I knew some when I was in. (And they are mean/tough DIs in boot camp!) It's a pathway to citizenship for them, if they choose. I'm sure there are restrictions about who can serve.