Dana Priest on the U.S.'s Role in Mexico's Drug War

The United States and Mexican security services have forged an unparalleled relationship in recent years in the fight against drug cartels. But now, much of that cooperation may be in jeopardy. Washington Post National Security Reporter Dana Priest talks about the cooperation between agencies like the CIA, the DEA, and the FBI and their Mexican counterparts and looks at how that relationship may change on the eve of President Obama’s trip to Mexico.