Mexican cartel bosses have a history of seeking a safe haven in the United States in an apparent effort to avoid dying at the hands of their rivals or having to shoot it out with Mexican military forces. U.S. law enforcement officers arrested several key cartel bosses after they sought refuge in Texas. It is not clear how many Mexican cartel bosses have in fact crossed or continue to cross into the U.S. and avoid being captured. Authorities arrested the following five cartel leaders in South Texas. Just click here to see the list.