Rep. Barney Frank told Lawrence O'Donnell on last night's The Last Word on MSNBC that President Obama has been "too trusting of the Republicans" given "how right-wing the Republican Party has become."

"He said he would govern in a post-partisan manner; I got post-partisan depression," Frank said.

However, he wasn't too depressed to find the campaign for the Republican nomination "very entertaining," and he concluded the interview by suggesting a slogan for 2012 Democratic candidates: "We're not perfect, but they're nuts."

Franks' criticism wasn't reserved for Obama, for Republicans or even for elected officials. He also expressed frustration with voters, who treat "politics" like a bad word and don't want politicians to "talk about one of the most important parts of the job."

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