Nullification is the precursor to secession in so far as it essentially allows a state to divorce itself from federal laws. And, of course, it’s one of several tools employed by racist states rights’ yayhoos.
Alabama is eerily close to passing a nullification bill:
The Alabama state Senate passed legislation Tuesday that would nullify all federal gun laws in the state, joining a growing list of state legislatures looking to ban gun legislation from the books.
The Alabama bill says that any federal law that is contrary to the Second Amendment would be declared “null and void” in the state.
Of course, I’m a bit of an extremist on this issue and strongly believe that any state that passes nullification ought to be stripped of all federal funding. If American laws aren’t good enough for them, then American money shouldn’t be either.