Congress gets to decide what reciprocity states must have. Driver's Licenses are one of those. Every US state must accept every other US state's licenses. Cong

Congress gets to decide what reciprocity states must have. Driver's Licenses are one of those. Every US state must accept every other US state's licenses. Congress did not decide that concealed carry had reciprocity. The entire "legalizing gay marriage" argument was if states had to be forced to accept same-sex marriages from other states where it was legal.