From Australia to the United Kingdom, CNN Travel looks at what other governments tell their citizens about staying safe in a United States where mass shootings and gun violence have become ...

The Trump administration’s hard-line policies have prompted Germany, the U.K., and other countries to issue travel advisories for visiting the U.S.

Tips on planning a summer vacation and cheapest time to travel 03:38. Twenty-one countries around the world have a "Do Not Travel" warning from the U.S. State Department, as of April 30.