Also in Slate, Michael Newman describes BP chief Tony Hayward's dodgy testimony.
By the end of the day David Plouffe, Obama's campaign manager in 2008, had sent an e-mail to millions of Obama's supporters asking them to sign an "open letter" that would send a message to Barton to show "him and other Republicans that they weren't elected to defend big oil." Even if people sign on to the effort, it's not a letter that Plouffe will ever send. The reality is there's not a single thing about Joe Barton's behavior they'd like to change.
Correction, June 18, 2010: This article originally misquoted Carl-Henric Svanberg as calling residents of the Gulf "little people." (Return to the corrected sentence.)