Why.......? G.O.P. = Grand Obstructionist Party Senate Republicans block campaign ad disclosure bill - Yahoo! News ASHINGTON â€” Senate Republicans beat back Democratic attempts Tuesday to pass a bill that would impose stringent disclosure requirements on corporations, unions and other independent groups that finance ads for political campaigns. Ignoring pleas for passage from President Barack Obama , not a single Republican voted for a motion to limit debate and proceed toward final passage of the so-called DISCLOSE Act. Without Republican support, the debate-limit motion failed 57-41, falling short of the 60 votes required under Senate rules to shut off debate.