Darrell Issa is obviously starting to get on people’s nerves with his silly partisan “investigations” and increasingly outlandish accusations; his unhinged attack on White House Press Secretary Jay Carney as a “paid liar” drew sharp responses from both David Plouffe and Robert Gibbs today.

It was, however, this reaction from David Plouffe that caught my eye. In President Obama’s inner circle, few are as influential as Plouffe, who ran the Obama campaign in 2008 and served as a White House Senior Adviser to the president up until late January of this year. So when he’s calling the chairman on the House Oversight Committee “Mr. Grand Theft Auto” and a “suspected arsonist/insurance swindler,” it reflects a striking escalation.

Unlike Issa’s rhetorical jabs, Plouffe’s brush-back pitch at least has the benefit of accuracy. As we discussed a few weeks ago, Issa, the man Republicans have tasked with leading investigations into alleged administration misdeeds, really has spent a fair amount of his adult life as a suspected criminal.