Robert Greenstein

 On the February 12 World News Saturday, ABC correspondent David Kerley highlighted claims by Bob Greenstein of the left-leaning Center on Budget and Policy that the Democratic-controlled Senate and President Obama would block Tea Party-backed cuts from this year’s federal budget, thus protecting Republicans from their "less than responsible actions."

After Kerley began his piece by recounting that Tea Party Republicans in the House had pressured House Speaker John Boehner to support a plan cutting $100 billion in planned spending from the current fiscal year's budget, calling the cuts "broad and very deep," the ABC correspondent included a clip of Greenstein asserting that "they’re bigger than people think" without informing viewers of the liberal lean of his organization.

After a second clip of Greenstein in which the former Carter administration member contended that Republicans are "protected from the consequences of their own, I think, less than responsible actions here," Kerley continued: "Protected from the consequences, he says, because the Democratic Senate and the President will not go along."

For the second night in a row, MSNBC's Lawrence O'Donnell exposed a prominent liberal for being totally ignorant about the tax code.

His victim on Wednesday's "The Last Word" was liberal media darling Rep. Alan Grayson (D-Fla.), and this time O'Donnell had some assistance from two very unlikely participants (video follows with partial transcript and commentary):