I don’t disagree with your premise at all. I just object to the selective indignation and response of the federal government, whether it be DHS, DOJ or any other out-of-control federal entity. But that pretty much includes all of them, doesn’t it...
Not nullification, but “up-yours” legislation. The Supremacy Clause prevents states from legislating in areas in which the federal government legislation already occupies, at least in direct contradiction to such fed legislation.
More states need to do this. When the feds show up, arrest them, unless previously authorized by some state official.
The central issue is the Constitution and how the feds regularly violate it and have huge departments unauthorized by the Constitution. If you dismantled the unconstitutional cabinet departments and the unconstitutional administrative state that spews out these obnoxious and dead-end regulations, and actually cut the feds down to its constitutional size, I think you will have cut at least 80% of the $4 trillion government and would send hundreds of thousands of government officials, bureaucratic heads and workers home packing. Short-term pain for them, long term recovery for America.
Probably the greatest political need in out country is the average citizen getting a hold of the Constitution and learning its presumptions, structure, text, as well as the perversions perpetrated by SCOTUS especially since the beginning of the 20th century. Americans need to OWN THEIR Constitution and THEIR freedom. It belongs to THEM, not the feds.