For those who're in the US, the courts can stop the government. The ones more at risk are non-citizens who are abroad.
If you have enough money to hire lawyers or can figure out how to get in contact with a law firm willing to work with you for the exposure, sure.
If you aren’t lucky enough, you’re just screwed.
Can they though? Hasn’t the government already ignored plenty of injunctions against them?
This government and its supporters would say - Due process isn't applicable to everyone in the US especially who they perceive as being "illegal immigrant".