No. First, states have the right to regulate how firearms are handled inside their borders, but the main reason is the patchwork of requirements for obtaining a gun. Some states are stricter than others. I could see all kinds of crazy visiting Texas or Montana, where pretty much anyone can get a gun and CCP, then go to another state, maybe one filled with "libtards," and have a field day. It plays right into the hands of white supremacists. So no.