That was a total joke, and was not enforced anymore than we go after undocumented workers at the local level. In Saltillo there were people from all over the world who were attending medical school in a WHO approved school who overstayed visas by literally years, and Americans who did the same with their tourist visas. The Mexican border just a hundred years ago ,as was the Canadian border, was virtually open both ways. Each year the borders get more restrictive, and despite the same I could easily get into this country whenever I wanted along the Canadian border, so this idea as the FBI has documented of worrying about the Mexican border is more about the color of Mexican's skin and white nationalist who do not like catholics, jews, muslims, and blacks. If the border was shared with Sweden, there would be no wall, no fascist response, and terrible Mexican food in America.......the Swedish meatballs would rock though.