Highlights: The Supreme Court declined to reinstate a Missouri law that prevents local police from working with the federal government to enforce certain gun laws.
The justices on Friday sided with the Biden administration in denying the Republican-led state’s emergency application to put the law back into effect while a legal challenge proceeds in a lower court.
Nullification theory has been a legal idea since before the Supreme Court issued their ruling in Marbury v. Madison on constitutionality. See Kentucky and Virgina Resolutions of 1798-1799.
I guess those Missouri legislators forgot about the Supremacy Clause during their courses in history/civics. It would also be upheld in McCulloch v. Maryland (1819), and most recently Edgar v. MITE Corp (1982) and another in 2000.