Age restrictions
Buying/drinking alcohol 21. Proper ID is required to buy or be served alcohol: a passport should suffice, an out-of-state driving license might not.
Driving 16
Sex 16, for consensual heterosexual sex, although the laws regulating gay sex are blurry. Certain wording in the Massachusetts General Laws suggests that the age of consent for “unnatural acts” is 18. As this guide went to press, the Massachusetts Supreme Judicial Court had not repealed the state’s ancient sodomy laws, but it has limited the law to cases that are non-consensual or committed in public places.
Smoking 18. Be warned: to buy cigarettes, ID is required from anyone who looks younger than 30.