McClatchy Newspapers: As the Gulf of Mexico focuses on cleaning up the mess left by the BP oil spill, the question facing the nation’s capital is: Will Washington clean up its act, too? Congress is considering stricter regulation of oil exploration, and the Obama administration has pledged to overhaul the disgraced federal agency that oversees oil drilling. Already, however, some of the toughest proposals are facing stiff opposition from Republicans and some Gulf Coast Democrats whose constituents …