TIJUANA — Life in Tijuana’s largest migrant shelter has begun to take on the familiar rhythms and sounds of a Central American neighborhood: Early in the morning, adults rise and get ready to go to work. Children dress for school. Mothers gather huge bundles of dirty clothes for the day’s wash. Vendors hawk coffee.

“We are getting used to this life,” said Norma Pérez, 40, who left Honduras in a migrant caravan bound for the United States about two months ago with her 5-year-old son.

For weeks, they walked from Central America up to the Mexican border with the United States, fleeing poverty and violence. All along the way, President Trump described the migrants as a danger, as invaders trying to crash their way into the United States. But they didn’t stop their trek north.