Get the local sheriff to do it, that's how it used to be done. Marshals would enforce the law in territories without elected sheriffs, and they would enforce the orders of federal courts, just like they often do now. Since in most places the sheriff is elected, he won't be enforcing any federal laws which most of his electorate think are unconstitutional.
Remember at Ruby Ridge it was the federal marshals who fired the first shots (at the dog!). Of course the Marshals were lied to by the BATFE, but if they've not learned to not trust those bad apples, they deserve whatever comes from believing them. Same thing happened, to a lessor extent, to the FBI at Waco.
Interesting ideas. I’ll throw it in the hopper for Constitution version 2.0. We’ll call it the El Gato clause.