 Mexican journalists like Lydia Cacho have been threatened, beaten, raped, and forced into exile for reporting on these facts.Improved cooperation of Mexico with the U.S. led to the recent arrests of 755 Sinaloa cartel suspects in U.S. cities and towns, but the U.S. market is being eclipsed by booming demand for cocaine in Europe, where users now pay twice the going U.S. rate.U.S.