The de jure minimium age to purchase tobacco is 21 now in the US, so I guess anyone see to sell tobacco products to those under that age could be held responsible as well.
To put these percentage changes in terms of interest to policy makers, a 10% decrease in gambling expenditure in NSW would result in 4579 fewer ASS offences; 2867 fewer BESD offences; 1380 fewer BESND offences; 1398 fewer MVT offences; 2361 fewer SFMV offences; and 3793 fewer FRD offences 2 each year