Reporting by the Florida Center for Investigative Reporting found the toll lanes are developed without much public input, and without reliable knowledge of the cost.
The US has deported more than 1-million illegal immigrants since 2008 and an increasing number of them find themselves in some of the most dangerous regions of Mexico.
The drug cartels prey on them, holding some of them for ransom from their relatives who are still in the US. Others are recruited to join the drug gangs.
The Los Angeles Times followed their plight in a series called “Without A Country.”
Reporter Richard Marosi said, “They’re suspended between two nations. A lot of them have spent 10 or 20 years in the US. They don’t really have relatives left in Mexico. So they’re really in a state of limbo.”