Every state had to do that thanks to Federal extortion threatening to withhold highway funding unless the legislation was passed.
Same thing for the nationwide 0.08 BAC standard
MADD found it cheaper and easier to persuade one legislative body rather than 50.
We were allowed to drink at 18 because they were sending us to Vietnam. Old enough to fight was old enough to drink. I don’t think I would want to be 18 again.