Of the 12 countries from which travel is fully restricted, three are embroiled in bloody civil wars. Many of the other countries are also undergoing conflicts.

Here is a closer look at why the administration says it is instituting full bans on foreign nationals traveling to the U.S. from 12 nations.

U.S. President Donald Trump often says the 2026 World Cup and 2028 Los Angeles Olympics are among the events he is most excited about in his second term.