A fund-raising letter has revealed one of the leading figures pushing for an investigation of alleged U.S. torture of terror suspects following 9/11: leftist billionaire-financier George Soros. Officials at the Open Society Institute, which was founded by Soros in 1993 to promote progressive causes around the globe and which bills itself as “a Soros Foundation Network,” issued an e-mail to supporters yesterday announcing the creation of a new organization called the Commission on Accountability. On its Web site, the Commission on Accountability demands an “independent, non-partisan” investigation of “torture and cruel, inhuman and degrading treatment of detainees.” The Commission on...