Robert Evans just did a Behind the Bastards episode about this and how a lot of the trafficking ‘warnings’ spreading around social media are essentially modern day chain letters that people keep forwarding on to others creating FUD.
The episode started with him talking about a recent story of a woman who travelled to El Paso to meet her boyfriend and took an Uber from the airport. During the drive she saw road signs for Juarez Mexico (essentially a sister city/suburb of El Paso with the boarder running between the two), assumed the Uber driver was trying to traffick her to Mexico, and shot him in the back of the head while he was driving.