Sick children, families and businesses are among the many people in Haiti, a country plagued by gang violence, likely to be hit hard by a U.S. travel ban.

The Trump administration announced in a proclamation on Wednesday that it will ban nationals from Haiti from entering the United States and partially limit Cubans and Venezuelans from coming into the country.

Donald Trump has reinstated a key policy from his first term, imposing new travel restrictions on citizens from 12 countries, including Venezuela and Haiti.