Corrales, wearing a yellow soccer jersey, expressed few complaints with the camp, where he sold single cigarettes to fellow migrants. He thought the caravan’s experience crossing into Guatemala and Mexico would prove the template for the U.S. border.

But now, “I’m done with the United States. I’ll stay here.”

Others in the caravan admitted dismay with the impatience of their colleagues.

“This was their idea and their actions are going to hurt us,” said Javier Pineda, 31, a construction worker who put his name on the asylum list at the border. “We’re going to wait our turn. This is our dream.”