The rumors about Margarita Crispin started soon after her first day as a customs officer in El Paso, Texas. In March 2003, Crispin started working the line at the Paso Del Norte bridge, across from Ciudad Juárez. Nearly one-fifth of all drugs seized coming across the border enter through the El Paso-Juárez area, and the region is viciously contested by Mexican cartels. So when Crispin waved off the dogs that sniff out drugs in the long line of cars waiting to enter the United States, saying she didn't like them around her, it raised a few eyebrows.