A 9NEWS documentary follows the lives of migrants on their journey from Venezuela to El Paso to Denver and how the Colorado city is coping with the influx.
For many people coming to Denver from south of the border, Denver isn't their final destination. The challenge is buying a ticket for their next stop on the route.
Maria Stepanyan applied for her brother to join her in the United States from Armenia. She submitted the application in 2010 but has not been seen due to a backlog.