Please check this page for news regarding international travel.
Aviations Security Enhancements for Select Last Point of Departure Airports with Commercial Flights to the United States.
Mobile Passport Control is a free app that U.S. citizens and Canadian visitors can use to expedite their entry into the United States. This is the first app authorized by U.S. Customs and Border Protection (CBP) and enables travelers to create a profile with their passport information and pre-answer the CBP inspection related questions. See the full list of participating international airports and check out Travisa for any of your other visa and passport related needs.