According to Fox News columnist Sally Kohn, vice presidential nominee Paul Ryan's speech at the Republican National Convention on Wednesday "was an apparent attempt to set the world record for the greatest number of blatant lies and misrepresentations slipped into a single political speech."

"On this measure, while it was Romney who ran the Olympics, Ryan earned the gold," Kohn wrote.

In a surprising move, Fox News joined CNN, The Huffington Post, the Washington Post's Wonkblog, and ThinkProgress in publishing a fact-check of the Republican vice presidential nominee's speech, finding that the speech was full of lies and misleading assertions.

Kohn, who describes herself as a "progressive voice on Fox News," wrote in her Thursday column that though Ryan came off as likable during his speech, his misrepresentations and omissions "caused a much larger problem for himself and his running mate."

In contrast, several Fox News commentators praised Ryan's speech on air after the event, without mentioning his misleading claims, according to Media Matters.

In her column, Kohn called out four lies in Ryan's speech. She critcized Ryan for blaming President Obama for the shutdown of a General Motors plant in Janesville, Wis., that actually was closed during the Bush administration. She also knocked Ryan for pinning the blame for S&P's downgrade of U.S. debt on Obama, when Republicans in Congress helped precipitate the downgrade by threatening to refuse to raise the debt ceiling.

"The good news is that the Romney-Ryan campaign has likely created dozens of new jobs among the legions of additional fact checkers that media outlets are rushing to hire to sift through the mountain of cow dung that flowed from Ryan’s mouth," Kohn wrote.

You can read Sally Kohn's full takedown of Paul Ryan's speech for Fox News here.

Loading Slideshow...

  • Former Alaska Gov. Sarah Palin (R) & Jane (<em>Tarzan</em>) <em>Photo credit: AP/Disney</em>

  • Rep. Barney Frank (D-Mass.) & Mr. Smee (<em>Peter Pan</em>) <em>Photo credit: Disney/AP</em>

  • Sen. Bernie Sanders (I-Vt.) & The Mad Hatter (<em>Alice In Wonderland</em>) <em>Photo credit: Disney/Getty</em>

  • Rep. Charlie Rangel (D-N.Y.) & Cogsworth (<em>Beauty & the Beast</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Darrell Issa (R-Calif.) & Pinocchio (<em>Pinocchio</em>) <em>Photo credit: Disney/Getty</em>

  • Rep. Emanuel Cleaver (D-Mo.) & Mr. Potato Head (<em>Toy Story</em>) <em>Photo credit: Disney/Getty</em>

  • Rep. Maxine Waters (D-Calif.) & Professor Owl (<em>House of Mouse</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Jason Chaffetz (R-Utah) & Russell (<em>Up</em>) <em>Photo credit: AP/Disney</em>

  • Rep. Grace Napolitano (D-Calif.) & Ursula (<em>The Little Mermaid</em>) <em>Photo credit: AP/Disney</em>

  • Rep. George Miller (D-Calif.) & Mister Geppetto (<em>Pinocchio</em>) <em>Photo credit: Disney/Getty</em>

  • Rep. James Lankford (R-Okla.) & Peter Pan (<em>Peter Pan</em>) <em>Photo credit: AP/Disney</em>

  • Sen. Kirsten Gillibrand (D-N.Y.) & Andy's Mom (<em>Toy Story</em>) <em>Photo credit: AP/Disney</em>

  • Karl Rove & Blanky (<em>The Brave Little Toaster</em>) <em>Photo credit: AP/Disney</em>

  • Sen. Barabara Mikulski (D-Md.) & Lady Kluck (<em>Robin Hood</em>) <em>Photo credit: AP/Disney</em>

  • House Speaker John Boehner (R-Ohio) & The Caterpillar (<em>Alice In Wonderland</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Mary Bono Mack (R-Calif.) & Gadget Hackwrench (<em>Chip 'n' Dale</em>) <em>Photo credit: Disney/Getty</em>

  • Senate Minority Leader Mitch McConell (R-Ky.) & Toby Turtle (<em>Robin Hood</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Paul Ryan (R-Wisc.) & Eric (<em>The Little Mermaid</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Kristi Noem (R-S.D.) & Snow White (<em>Snow White and the Seven Dwarves</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Ron Paul (R-Texas) & Claude Frollo (<em>The Hunchback of Notre Dame</em>) <em>Photo credit: Disney/AP</em>

  • Former Sen. Rick Santorum (R-Pa.) & Woody (<em>Toy Story</em>) <em>Photo credit: Disney/AP</em>

  • Gov. Nikki Haley (R-S.C.) & Vanessa (<em>The Little Mermaid</em>) <em>Photo credit: Disney/AP</em>

  • Sen. Chuck Schumer (D-N.Y.) & Commander Lyle Tyberius Rourke (<em>Atlantis: The Lost Empire</em>) <em>Photo credit: Disney/AP</em>

  • Rep. Virginia Foxx (R-N.C.) & The Fairy Godmother (<em>Cinderella</em>) <em>Photo credit: AP/Disney</em>

  • Gov. Chris Christie (R-N.J.) & Chef Auguste Gusteau (<em>Ratatouille</em>) <em>Photo credit: Disney/AP</em>