So, you'd be good enforcing something like the Fugitive Slave Act? Or confiscating firearms, if the courts said it was OK?
A state law ordering the confiscation of firearms would be directly in violation the Second Amendment and therefore unconstitutional on its face. In order for it to be "constitutional" there would have to be an amendment to the Constitution to delete the 2nd Amendment, which is highly unlikely. At that point it would become technically "constitutional." These kinds of "what ifs" are too much of a stretch for me to really worry about and debate. Same thing with the Fugitive Slave Act. I can't debate that without accepting on at least a theoretical level that this could ever be a possibility. It isn't, as far as I'm concerned, possible. It's like asking me if I'd assist with injecting citizens with "zombie juice" in order to make an army of living dead. I don't see the point in arguing something like that.