This update on the controversy over President Bush’s warrant-less domestic spying program–on Capitol Hill, Senate Republicans have blocked a proposed investigation into the operation. On Thursday, Republican Senator Pat Roberts, chair of the Intelligence Committee said, his panel decided not to conduct an investigation. Roberts said he reached an agreement with the White House to consider legislation and provide more information to Congress on the eavesdropping program. The ranking Democrat on the committee — Sen. John Rockefeller — said “Today, the Senate Intelligence Committee once again abdicated its responsibility to oversee the intelligence activities of the United States.”