I have posted this idea many times, but look at it as a political aspect and election help.
Trump should ask each Mayor in this country if they want Federal agents in their city. If NO, announce that no agents will enter except federal buildings security. Illegals, gang members, rapists, robbers will know they will be safe there.
As crime jumps a lot, voters MAY lean to RED.
I’m not arguing against the presence of feds in cities, but do you think they have much impact on violent crime? The FBI and the rest don’t focus on the crimes you described except going after illegals. Here in Miami, actual violent crimes by illegals are miniscule in the overall statistics.