Best protection: Send them back where they belong!
In 1997 a french girl and I was in luv she was a school teacher on a H1B in San Francisco, Bill Clinton went to Silicon Valley and they said Bill, we need Chinese Engineers we don’t need french school teachers.
So they took her visa away, I ended up with a wife a son a daughter a mtg and a dog (in that order) it was a good deal.
The audacity of these scumbag congress critters. We live in the era of American American people haters: If you are not flushed down the toilet or sold of for body parts after abortion, you will be replaced by a foreigner one way or another legal or illegal. God bless America!!!