I don’t agree. Its a stupid argument. Under the 14th Amendment, Congress has the undisputed power to pass a federal law to ensure the unimpeded exercise of the rights guaranteed to Americans and that includes the 2nd Amendment. States’ rights are not absolute. And Congress has the power to ensure all states grant reciprocal treatment to the laws, judicial proceedings and records of other states. Robert Verbruggen thinks the only group of people whom states should be permitted to discriminate at will against are gun owners. Either Congress can ensure every one can freely exercise their rights or there’s no point to the Constitution. By the way, states’ rights has always been a hoary doctrine used to justify slavery and then the wholesale denial of constitutional rights to certain Americans based on their race. It won’t wash - not in this day and age.
Back in 1989, a California Highway Patrolman pulled me over on Hwy 101 north of LA. He had seen me drive through there with Florida plates once before. He started in about needing to have CA plates and DL and was about halfway through writing a big ticket when I handed him my military ID and informed him I was active duty and exempt from his pissant rules. He walked back to his vehicle mumbling to himself for not looking for a DoD sticker on the windshield.