Homeland Security Agencies Work To Secure U.S.-Mexico...

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A U.S. Border Patrol agent finds a stem of marijuana found while... News PhotoCar,Crime,Customs,Finding,Government,Horizontal,Justice - Concept,Law,Marijuana - Herbal Cannabis,Mexico,Politics,Searching,Stem,USA,United States Border Patrol,Waist UpPhotographer Collection: Getty Images News 2013 Getty ImagesNOGALES, AZ - FEBRUARY 26: A U.S. Border Patrol agent finds a stem of marijuana found while searching a car at a checkpoint near the U.S.-Mexico border on February 26, 2013 north of Nogales, Arizona. Border Patrol agents use canines to detect illegal drugs crossing north from Mexico. (Photo by John Moore/Getty Images)