How does that compare with putting hundreds of thousands of people into cages for arbitrary reasons, I wonder. Or depositing them in random countries to be killed because they are e.g. homosexual.

Breaking a country's immigration laws does come with consequences, yes, at least if the government is willing to enforce to said laws, as it should be. Previously we had governments that weren't.

If you have a problem with those laws and think our borders should be wide open, that's of course a different matter, and one you should take up with Congress, which makes the laws.