Fortunately, or unfortunately, this is the system of government that we have down here. I'm guessing that very little will change when states get to set their own laws. Back when I was growing up there were different drinking ages all over the country. (Maybe there still are?) And believe it or not, there were some States then even allowed individual communities to set the age. Heck, we used to drive into Canada to get fireworks. (No idea if that's still a thing.)