Please check this page for news regarding international travel.
In January 2018 The United States Department of State revised the Travel Warning system to a Travel Advisory List. This list is on a 1-4 scale. For information on the new system please visit https://travel.state.gov/content/travel/en/traveladvisories/traveladvisories.html
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.