For starters, if their skin isn't white or their gender not male, then they should expect to be rounded up at some point for forced labour or reproduction.
It appears that you're (I'm in the UK) not even a year into his term and yet there do seem to be a lot of people being rounded up on the pretence of them being resident illegally, and I think there's just been a ruling that racial profiling is back on the menu.
I also have my doubts about what would happen if he makes up some bullshit excuse to stay in power for a third term - who would actually remove him from office?
This would have been the easiest way to get rid of him, but not enough people bothered. Why would you expect them to do something harder now?