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I'm going to guess "misbehavior" here means being politically inconvinent. There's also a big difference between a small portion of people on work visas who can work their way up to full citizenship, and nobody having citizenship or the possibility thereof.

Yes, that's how a non-permanent visa works in just about every country. Some offer grace periods, but your residence there is still seen as extending a privilege.

The grace period is a major differentiator. Germany gives 3 months if you're on a Blue Card. That's plenty to find a new job.

And btw, Blue Card can be exchanged for unlimited residence after working there for 21 months.

Except being "out" of the US isn't being chucked into the vacuum of space or being on the hook for a million dollar trip back to Earth.