Over 86% of e cigarettes on the U.S. market are illegal products from overseas, despite annual seizure of millions of illegal units by the FDA and U.S. Customs and Border Patrol USA: Illegal Vapes Tobacco Insider U.S. lawmakers look to crack down on e cigarettes and vapes Federal agents seize illegal vaping products worth $18 million UPI.com Basically, its not illegal for teens to smoke, But , You cant buy cigarettes or vapes , Adults arent allowed to give or buy them for you , You cant smoke within 9 metres of a public place ,