Add a constitutional amendment to create a national age of majority that applies to all laws and purchases.

Pass an constitutional amendment to set nationally the age of majority at 18. Our 18 year olds can be drafted into military and can fight for our country but in some states are still considered minors. States differ from state to state on what is considered an adult. An 18 year old may be an adult in their home state but as soon as they decide to move to another state may be considered a minor again. I think this should be universal across all states and also not have one age to be an adult as far as the laws, one age as far as the military, another age for tobacco, and yet another age for alcohol. Please set a single age for adulthood across the board for all states.