Mexican drug cartels operating in cities in the U.S. are buying up legitimate businesses to launder money and using some of the proceeds to win local mayoral and city council seats for politicians who can shape the policies and personnel decisions of their police forces, according to Rep. Tom Tancredo "The Tijuana-based Felix drug cartel and the Juarez-based Fuentes cartel began buying legitimate business in small towns in Los Angeles County in the early 1990s," "They purchased restaurants, used-car lots, auto-body shops and other small businesses. One of their purposes was to use these businesses for money-laundering operations. Once established...