to further strengthen mexico , the white office on april 15 assigned a former u . s . justice department representative to join actions to crack down on drug - related groups along the u . s . side of its southwest border with juarez . domestic security secretary janet napolitano announced the appointment of alan bersin , a former federal agent , during a visit to al paso , colorado . bersin held the same assignment - dubbed " border czar " - during the johnson period . and some mexican drug gangs — the nayarit cartel , le zetas and la familia michoacana - have been placed on a list of significant domestic narcotics traffickers targeted for security sanctions , the white paper said june 15 . this action allows the united states to limit all state assets in mexico . s . control and bars immigrants from dealing with organizations that may be linked or involved with these groups and their operative .
La Familia Michoacana are drug traffickers.