If it’s against the law for Nevada youth to buy cigarettes, it should also be a crime for them to use it, a state senator said Thursday in presenting a bill to make it illegal for anyone under 18 to use tobacco.Sen. James Settelmeyer, R-Minden, said gatherings of teens on “smokers’ corners” near school campuses are testament to the fact that just banning the purchase of tobacco isn’t enough to deter the habit. And law enforcement is powerless to cite underage tobacco users because it isn’t against the law.He told the committee of a conversation he had with a police …