Terry's family issued a statement Wednesday that called for all of the documents sought by the committee to be turned over.

"Our son lost his life protecting this nation, and it is very disappointing that we are now faced with an administration that seems more concerned with protecting themselves rather than revealing the truth behind Operation Fast and Furious," the statement said.

The mother of another federal agent said Wednesday she wants to know the "full truth" about his death.

Immigration and Customs Enforcement Agent Jaime Zapata, who was working for the United States in Mexico, was murdered in February 2011 when his vehicle was ambushed on a highway between Mexico City and Monterrey.

Sen. John Cornyn, R-Texas, last year said he wanted to know if a Texas-based "gun walking" program may have played a role in Zapata's murder. He said one of the weapons used in the slaying was allegedly purchased in Texas and trafficked to Mexico.