UCLA Historian Kelly Lytle Hernandez provides some context to "Operation Wetback" and how it was as much about legalization as about enforcement. http://cnn.it/1ODaXhU As president, Donald J. Trump says he would eject some 11 million undocumented workers from the country. He cites a specific model for his proposal: "Operation Wetback," an aggressive and unprecedented sweep by U.S. Border Patrol agents in the mid-1950s that plucked Mexican laborers from fields and ranches in targeted raids, bused