Chief Executive Officer Mary Barra will tell the U.S. Congress on Wednesday.that U.S.General Motors expects to begin processing victims' claims related to faulty ignition switches by August 1st. In prepared testimony to be delivered to the House of Representatives Energy and Commerce Committee, Barra also will say that Kenneth Feinberg, who is overseeing the creation of a compensation fund, will have "full authority to establish eligibility criteria for victims and determine compensation levels.