Philadelphia Inquirer: Maybe Joe Barton finally did it. Maybe the Texas congressman’s rash rush to hold BP’s hand will wake up Americans to the daunting reality of today’s ultrapartisan politics, where nothing is good if it bears the other team’s brand. Most Americans are likely pleased that President Obama’s measured belligerence led BP to announce a $20 billion escrow fund to aid victims of the Gulf oil spill. Barton, though, had the gall to call the deal a “shakedown,” casting the Britons as poor …