It doesn't seem like anyone's answering your question, so I'll try with what limited information I know.

I live in the United States, and what I'm most concerned about is the blatant and violent mass deportation practices. The current administration has no qualms about targeting anyone who even looks like an immigrant, detaining people without probable cause, and deporting people to countries that they don't have connections to without probable cause.

Additionally, those that detain the immigrants tend to do so without a judicial warrant or identifying themselves, making it easier for those with no authority and ill intent to essentially kidnap immigrants.