Upon arrival in Boston, going through passport control and customs is a straightforward process, though it can be time-consuming at busy travel times.
For up-to-date information, see www.cbp.gov.
Personal Exemptions Each traveler is permitted to bring up to $800 worth of merchandise into the US without incurring any duty, assuming they have been out of the country for at least 48 hours.
Alcohol & Tobacco Each visitor is allowed to bring 1L of liquor and 200 cigarettes duty-free into the US, but they must be at least 21 and 18 years of age, respectively.
Citizens of most countries are eligible for the Visa Waiver Program, which requires prior electronic approval via Electronic System for Travel Authorization (ESTA).