SAN DIEGO (AP) — Border agents have been told to explicitly target Spanish speakers and migrants from Latin America in carrying out a Trump administration program requiring asylum seekers wait in Mexico, according to memos obtained by The Associated Press that reveal some inner workings of a top government priority to address the burgeoning number of Central Americans arriving in the country.

The Trump administration launched the program in late January in what marks a potentially seismic shift on how the U.S. handles the cases of immigrants seeking asylum and fleeing persecution in their home...