The complex relationship between US and Mexico law enforcement

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A U.S. flag put up by activists who oppose illegal immigration flies near the US-Mexico border fence in an area where they search for border crossers October 8, 2006 near Campo, California. The activists want the fence expanded into a fully-lit double-fenced barrier between the US (R) and Mexico. US Fish and Wildlife Service wardens and environmentalists warn that a proposed plan by US lawmakers to construct 700 miles of double fencing along the 2,000-mile US-Mexico border, in an attempt to wall-out illegal immigrants, would also harm rare wildlife. Wildlife experts say cactus-pollinating insects would fly around fence lights, birds that migrate by starlight in the desert wilderness would be confused, and large mammals such as jaguars, Mexican wolves, Sonoran pronghorn antelope, and desert bighorn sheep would be blocked from migrating across the international border, from California to Texas.

While U.S. and Mexican authorities have been reluctant to work together in the past, but the arrest of Jose Saenz points to an improved relationship between the two. Here to talk about the complicated relationship is David Shirk, Director of the Trans-Border Institute at the University of San Diego.

While U.S. and Mexican authorities have been reluctant to work together in the past, but the arrest of Jose Saenz points to an improved relationship between the two.

Here to talk about the complicated relationship is David Shirk, Director of the Trans-Border Institute at the University of San Diego.