Type or print legibly in black ink. FCDO travel advice for USA.Includes safety and security, insurance, entry requirements and legal differences. See our updated FAQs below before making travel plans. You will require a visa to travel to the United States unless you are eligible to enter the United States visa free under the Visa Waiver Program. We provide services to British nationals living in and visiting New York, New Jersey, Pennsylvania, and Fairfield County in Connecticut. Please see our 'Intra CTA travel document requirements' guidance document. If you're not sure how these requirements apply to you, contact the Portuguese Embassy in the UK. Passport validity requirements. If you are a permanent or conditional permanent resident who has been outside the US for one year or longer, apply for a re-entry permit before you travel. You will need to use your BRP to set-up eVisa access and apply for a Home Office issued travel document.