and I'm proud to be an American

From Orcinus:

During the first seven months of the year, at least 90,000 Mexican children were deported by the U.S. government...

The unit also estimated that 6,000 minors between 14 and 17 years old originating in Michoacan remain in the border city of Tijuana after being abandoned by the authorities of the United States. And, for those who survive, those minors are devoted largely to illicit activities...

Most of these children are forced to survive by begging, stealing, and squatting, lending themselves out as prostitutes and drug runners.

One of the effects of lack of child protection in transit between Mexico and the United States, is that these fall into prostitution or drug trafficking networks when they are alone.

The Registry of Migrante described the situation of 6,000 children who are abandoned in Tijuana, having failed in an attempt to cross the border, and so have opted to find work doing anything with to survive without their parents. They have become, often, victims of abuse by coyotes and criminals.