Congressman John Slidell as U.S. envoy to Mexico to negotiate buying the territories of California and New Mexico from Mexico for about $30 million. (The California and New Mexico territories included present-day California and New Mexico..…

US/Mexico border fence near Campo, California, USA Patrick Poendl/iStock . The cartels are a problem for not just Mexico, but America as well. And it all has to do with the border. . . ..…