Here are the 12 countries placed under the ban, and the seven placed under travel restrictions: Trump’s proclamation declares that there is not a reliable central authority for vetting nationals who leave the country, or for issuing passports, therefore raising the risk of national security.

On most mornings, dozens of people line up and wait for appointments outside the U.S. Consulate in Johannesburg, South Africa, many seeking applications for visas to travel to the U.S. It can take up to five or six months just to get one of the appointments.