Obama told Univision‘s Jorge Ramos that President Felipe Calderon wasn’t informed of the operation because he — the president of the United States — wasn’t informed either. When asked whether he knew of the weapon smuggling plan, Obama responded that it is “a pretty big government” with “a lot of moving parts.”

The investigation into the program comes after it was connected to two weapons that were found at the scene of a border shootout that killed U.S. Border Patrol agent Brian Terry in December. Likewise, a gun smuggled from the U.S. were used to kill Immigration and Customs Enforcement special agent Jamie Zapata, but it has not been determined if it was part of “Fast and Furious.”