Pelosi knew in 2002
The CIA released documents that show that Nancy Pelosi was briefed on torture tactics in September of 2002, when she was the ranking member on the House Intelligence Committee. According to the documents, the CIA started briefing other members of Congress about waterboarding, including John McCain, in 2005.
The CIA-supplied material confirms a 2007 report in the Washington Post that Pelosi was briefed in 2002. The 2007 story story states that Pelosi was briefed on waterboarding, a charge her office denied in an official statement yesterday. Good thing Nancy Pelosi supports a truth commission to get to the bottom of all this.
Legal question: If a member of Congress gets a classified briefing about illegal activities, is there any way for them to blow the whistle without committing a crime themselves?