@cheryl rinehart,
I'm sorry this is happening.
But he's an adult, and has been so for 9 years already, per the law.
Say your piece, once, and then be done with it, just like you would with a friend. Don't rescue, don't come running. If he needs you, let him reach out first. He's a big boy. Let him wear the big boy pants and take the consequences if he gets in trouble with the law or in any other manner.