This morning on Fox & Friends, co-host Steve Doocy became the latest right-wing media figure to embrace the birther conspiracy theory. While once again providing Donald Trump a platform to peddle his completely debunked claims that President Obama is not a U.S. citizen, Doocy quipped that Obama “could end it simply; just show it [the birth certificate] to us.”

Doocy, as I am sure you know, Obama has “show[n]” us the birth certificate, and it is not a question to any sane person that Obama was born in Hawaii. But, of course, neither of Doocy's co-hosts had the guts to mention that to their viewers.

Doocy marks at least the third Fox News host who has recently embraced with a wink and a nod the debunked fringe conspiracy that Obama was born outside of the U.S. As Media Matters has noted, Sean Hannity recently spent a week on his show questioning Obama's birth certificate. Bill O'Reilly -- who initially mocked birther conspiracy theories -- came out last week to complain of being “bor[ed]” with the birth certificate issue, telling Obama to release his birth certificate and “put this whole thing to bed.” Fox News has repeatedly, repeatedly hosted Trump to tout his newly embraced birther conspiracy, which has reportedly been carefully taught to him by WorldNetDaily's Joseph Farah, who has been obsessed with all matter of Obama related conspiracy theories.

Let's just go over this one more time: In June 2008, Obama's campaign made public a copy of Obama's certificate of live birth, which was published on the Internet by numerous media outlets. Many experts, including a team from FactCheck.org, reviewed the document in person and determined it was authentic. On July 27, 2009, Dr. Chiyome Fukino, director of the Hawaii State Department of Health, certified that she had personally seen Obama's birth certificate in the original records maintained by the Hawaii government.

Also, while we're at it, Obama's grandmother did not “admit” that Obama was born in Kenya; Frank Marshall Davis Jr. is not Obama's father (but if he was, wouldn't that automatically make him a citizen?); Bill Ayers did not ghostwrite Obama's autobiography, nor did he admit to doing so; Obama's birth announcements were not planted; there's no Kenyan birth certificate for Obama; Obama's not using a phony Social Security number; Obama is not a Muslim; and the sky, is, in fact, blue.

So absurd is the Obama birther conspiracy, Glenn Beck won't even endorse it. And if you haven't been living in a cave for the past year, you know there's rarely a conspiracy theory that Beck doesn't embrace.

Why Fox has now decided to go all-in on the birther nonsense when they wouldn't touch the issue in 2008 is anybody's guess. My hunch is that they've spent the better part of the past three years smearing Obama as an anti-American, Commie, socialist, Nazi-like, white person-hating jerk, so they figure, why not add the idea that he's not even legally allowed to be president?

I often wonder if Fox has any limits regarding what they will use to attack Obama. It's becoming increasingly clear that the answer to that question is “no.”

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