Last week, a poll from Public Policy Polling found that 51 percent of GOP primary voters think Obama wasn't born in America.

Fox News' Bill O'Reilly, who has previously criticized media and polling outlets for covering birthers, downplayed the poll results and suggested that the attention paid to birthers is part of an effort to “marginalize Republican opposition in 2012 by painting them as nuts.”

During an appearance on The O'Reilly Factor, Fox contributor Karl Rove endorsed this theory and said that “this is the White House stategy. They love this.”

Sean Hannity, who has previously stated he has no problem with people “asking to see the birth certificate,” claimed that the entire issue is an “obsession by the media.”

But Fox is trying to have it both ways.

While network personalities blame the birther “obsession” on “the media” and the White House, Fox News and its affiliated websites regularly dabble in birtherism.

For example, if you head over to Fox Nation right now, you will see the following story on their front page:

Fox Nation excerpts and links to a story from fringe conspiracy/birther website WorldNetDaily. The WND article promotes that site's ongoing “Where's the Birth Certificate?” billboard campaign and celebrates the recent poll numbers from PPP.

And this is merely the latest in a long series of birther stories promoted by Fox Nation.

Who knew that the White House was in charge of posting stories to Fox's websites?