While the ban applies to Haitian nationals, some Haitian Americans are speaking out about its broader implications.

Even before President Donald Trump told Haitians this week they will no longer be welcome in the United States, travel from the crisis-wracked Caribbean nation was already difficult. It’s been restricted by deadly gang violence,

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.