FILE – In this May 6, 2010 file photo, oil from the leaking Deep Horizon oil rig is seen swirling through the currents in the Gulf of Mexico. Move over Goldman Sachs. Big Oil may be even less popular with the electorate than Wall Street bankers. Edgy lawmakers of both parties are counting on it. The month-old Gulf oil disaster has unleashed a gusher of congressional oversight hearings that may prove harder to cap than the blown BP well. (AP Photo/Dave Martin, File)

FILE – In this May 6, 2010 file photo, oil from the leaking Deep Horizon oil rig is seen swirling through the currents in the Gulf of Mexico. Move over Goldman Sachs. Big Oil may be even less popular with the electorate than Wall Street bankers. Edgy lawmakers of both parties are counting on it. The month-old Gulf oil disaster has unleashed a gusher of congressional oversight hearings that may prove harder to cap than the blown BP well. (AP Photo/Dave Martin, File)

April 17, 2013