Virtually every air traveler entering the U.S. is required to show a passport. All persons, including U.S. citizens, traveling by air between the United States and Canada, Mexico, Central and South America, the Caribbean, and Bermuda are required to present a valid passport. U.S. and Canadian citizens entering the U.S. at land and sea ports of entry from within the Western Hemisphere will need to present government-issued proof of citizenship, such as a birth certificate, along with a government issued photo ID, such as a driver's license. A passport is not required for U.S. or Canadian citizens entering by land or sea, but it is highly encouraged to carry one.
The U.S. Department of State has a Visa Waiver Program (VWP) allowing citizens of the following countries to enter the United States without a visa for stays of up to 90 days: Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxembourg, Monaco, the Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom. Citizens of Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Republic of Korea, and Slovakia are soon to be admitted to the VWP. (Note: This list was accurate at press time; for the most up-to-date list of countries in the VWP, consult http://travel.state.gov/visa.) Even though a visa isn't necessary, in an effort to help U.S. officials check travelers against terror watch lists before they arrive at U.S. borders, visitors from VWP countries must register online through the Electronic System for Travel Authorization (ESTA) before boarding a plane or a boat to the U.S. Travelers will complete an electronic application providing basic personal and travel eligibility information. The Department of Homeland Security recommends filling out the form at least 3 days before traveling. Authorizations will be valid for up to 2 years or until the traveler's passport expires, whichever comes first. Currently, there is no fee for the online application. Note: Any passport issued on or after October 26, 2006, by a VWP country must be an e-Passport in order for VWP travelers to be eligible to enter the U.S. without a visa. Citizens of these nations also need to present a round-trip air or cruise ticket upon arrival. E-Passports contain computer chips capable of storing biometric information, such as the required digital photograph of the holder. If your passport doesn't have this feature, you can still travel without a visa if it is a valid passport issued before October 26, 2005, and includes a machine-readable zone, or between October 26, 2005, and October 25, 2006, and includes a digital photograph. For more information, go to http://travel.state.gov/visa. Canadian citizens may enter the United States without visas; they will need to show passports (if traveling by air) and proof of residence, however.
Citizens of all other countries must have (1) a valid passport that expires at least 6 months later than the scheduled end of their visit to the U.S., and (2) a tourist visa.
What You Can Bring Into the U.S. -- Every visitor more than 21 years of age may bring in, free of duty, the following: (1) 34 ounces of wine or hard liquor; (2) 200 cigarettes, 100 cigars (but not from Cuba), or 3 pounds of smoking tobacco; and (3) $100 worth of gifts. These exemptions are offered to travelers who spend at least 72 hours in the United States and who have not claimed them within the preceding 6 months. It is forbidden to bring into the country almost any meat products (including canned, fresh, and dried meat products such as bullion, soup mixes, and such). Generally, condiments including vinegars, oils, spices, coffee, tea, and some cheeses and baked goods are permitted. Avoid rice products, as rice can often harbor insects. Bringing fruits and vegetables is not advised, though not prohibited. Customs will allow produce depending on where you got it and where you're going after you arrive in the U.S. International visitors may carry in or out up to $10,000 in U.S. or foreign currency with no formalities; larger sums must be declared to U.S. Customs on entering or leaving, which includes filing form CM 4790. For details regarding U.S. Customs and Border Protection, consult your nearest U.S. embassy or consulate, or U.S. Customs (www.customs.gov).
What You Can Take Home from the U.S. -- For information on what you're allowed to bring home, contact one of the following agencies:
Canadian Citizens: Canada Border Services Agency (tel. 800/461-9999 in Canada, or 204/983-3500; www.cbsa-asfc.gc.ca).
U.K. Citizens: HM Revenue & Customs (tel. 0845/010-9000, or 020/8929-0152 from outside the U.K.; www.hmce.gov.uk).
Australian Citizens: Australian Customs and Border Protection Service (tel. 1300/363-263; www.customs.gov.au).
New Zealand Citizens: New Zealand Customs Service, The Customhouse, 17-21 Whitmore St., Box 2218, Wellington (tel. 04/473-6099 or 0800/428-786; www.customs.govt.nz).
Unless you're arriving from an area known to be suffering from an epidemic (particularly cholera or yellow fever), inoculations or vaccinations are not required for entry into the United States.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.