Or they'll have ICE take them and they'll be deported or made to disappear. Some might even end up dying.
That's how the US is right now.
That only works if they aren't U.S citizens... Which if they're working for the gov means they are. This administration is creative they will find other more 'legal' ways for retribution so the punishment sticks.
They also lie to local police. There was a case here where they drove erratically to try and make it look like a legal observer rammed their vehicle. They hit him twice, called the local police, lied to the police and then said observer provided his dash cam footage and was released. Will ICE face any repercussions? Nope.