The three were Arizona Democratic Representatives Giffords, Republican Representative Mike Conaway from west Texas, and Judge Roll. Giffords and Roll were working together on investigating the extent of the clandestine weapons and druigs smuggling operation and held some joint meetings with informants, one in north Phoenix, in 2009.
Information on the investigation and informants was strictly limited to only a few trusted staffers and clerks for Giffords and Roll. In addition, Conaway was also being briefed by informants on the smuggling operation but since the death of Roll and the severe mental and physical incapacitation of Giffords from the shooting carried out by Jared Lee Loughner, said to be an MK-ULTRA-like trained assassin, he has gone silent in fear for his own safety.
Loughner's was declared mentally incompetent and there are reports, including one in Slate Magazine, that the U.S. Medical Center for Federal Prisoners in Springfield, Missouri, where Loughner is being held, pending a determination of his mental fitness to stand trial, is being administered psychotropic drugs in his Kool Aid.
In addition to receiving drugs to fund its off-the-books operations, the CIA weapons smuggling program is designed to arm the two main Mexican cartels — Sinaloa and Los Zetas — in order to destabilize Mexico.