18 year olds can sign a contract, buy a home, use a firearm, buy a car, etc. thanks to MADD, they can’t drink, but otherwise, they’re adults.
yet they can’t rent a car, run for office, go to a casino, get a concealed weapons permit in some states, or take a cruise.
BTW, it wasn’t MADD. It was that dingbat Liddy Dole.