It's going to take more than "suing" these outlaw cities/counties/states to get them to comply.
It's going to take nothing less than the FORCED PHYSICAL REMOVAL of recalcitrant and seditious officeholders from the positions they hold.
Think of it as a forced "Reconstruction" of such city/county/state agencies to bring them "back into the fold" insofar as the laws of immigration are concerned. With emphasis on "forced".
Backed up with U.S. agents and even armed federal troops if required.
Not possible, you say?
How about Little Rock, 1957...?