Factories that operate along the U.S.-Mexico border. They have been operating since the 1960s, but boomed after the implementation of NAFTA, which removed tariffs and deregulated industries. Factories that operate along the U.S.-Mexico border. They have been operating since the 1960s, but boomed after the implementation of NAFTA, which removed tariffs and deregulated industries. Vecindades Maquiladoras Indstria Mecnica Fbricas Desarrolladas