After a long trek, asylum seekers' last step is to wait
TIJUANA, Mexico - Irma Rivera heard about the caravan to the U.S. border when she reached Tapachula, a town on the southwest end of Mexico.
She and other immigrants staying in shelters saw fliers announcing the trip north.
By then, Rivera and her two children had been stranded for more than a month. The idea of joining a group for the 4,000-mile journey seemed a little less terrifying.
Back home in Honduras, nothing was left. Rivera's village was locked in a bloody land battle. Her husband had been shot dead in the fields. Her children, 4 and 6, were afraid to live at home.
When someone called Rivera with a death threat, the seamstress
