It's time to start calling H1B holders and other immigrant workers what they really are: they're scabs, workers brought in because they will tolerate pay and working conditions that citizens will not.
Not all migrant face deportation if they do not comply what they are told to.
Regulations around migration need to change, but no migration is impossible.
I'm not pushing for "zero migration". However, I don't think migration should be driven by business interests. A person who wants to move to another country should be able to do so.
However, I don't think a business should be able to say, "We can't find a citizen who meets our requirements, so we want to bring in a foreign worker."