Responding to criticism from the left-wing watchdog site Media Matters, Fox News Channel management says it “addressed” a “mistake” by a news anchor who asked her Twitter followers to weigh in on a claim by an insider in Hillary Clinton’s 2008 campaign that the Obama camp threatened Chelsea Clinton’s life if her parents exposed what they knew about Obama’s presidential eligibility.

Weekend and early morning anchor Heather Childers distributed the message with a link to a blog that picked up on a WND story that featured a video interview.

In a statement to the website Mediaite, Fox News Senior Vice President Michael Clemente said: “The tweets have been addressed with Heather and she understands there was a mistake.”

Childers has not replied to a WND request for comment.

The WND story cited Hollywood producer Bettina Viviano, who claims that it was a common belief inside Hillary Clinton’s campaign that Obama was not eligible to be president. The charges of Viviano and others connected to the 2008 campaign are now being investigated by Maricopa County Sheriff Joe Arpaio’s Cold Case Posse, which is probing Obama’s eligibility for Arizona’s 2012 ballot.

The controversial tweet by Childers, who anchors the weekend program “America’s News Headquarters” and co-hosts “Fox & Friends,” read: “Thoughts? Did Obama campaign threaten Chelsea Clinton’s Life 2 Keep Parents Silent?”

Media Matters, which has ridiculed any challenge to Obama’s eligibility, announced last year a campaign of “guerrilla warfare and sabotage” against Fox News. The network has rarely covered the eligibility issue, however.

When Media Matters Executive Vice President Ari Rabin-Havt confronted Childers with a critical tweet Tuesday, the Fox News anchor responded: “I know MM strives 2b FACTUALLY correct so attach the article plz. I was asking 4 opinion.”

Help Sheriff Joe blow the lid off Obama’s fraud. Join the Cold Case Posse right now!

According to Media Matters, after the publication of its initial post on Childers, she tweeted that Fox News anchors “present both sides but people see what they want.” She concluded: “Here’s the thing folks… that ONE topic sure got alot [sic] of you tweeting. Why? I apologize if the article offended anyone. Very interesting.”

Politico reported Media Matters’ shift one year ago “from media critic to a new species of political animal” when it “declared war on Fox News.”

The George Soros-funded organization decided to narrow its focus to the network and a small number of conservative websites that it regarded as the “nerve center” of the conservative movement.

In WND’s story, Viviano cited a campaign staffer who was close to Hillary Clinton, whose name she requested be withheld for security reasons. Viviano had an insider’s view of the campaign through her production of a documentary on alleged voter fraud by the Obama campaign and the Democratic National Committee.

See the WND video interview with Bettina Viviano:

The Hollywood producer said that staffer told her on two different occasions, a couple of years apart, that the murder of Arkansas Democratic Party Chairman Bill Gwatney just before the party’s convention in 2008 was a message to Bill Clinton.

“I was told by this person that that was ‘Shut up, Bill, or you’re next,'” Viviano said.

The campaign staffer, according to Viviano, said that despite the intimidation and threats, Bill Clinton was prepared to speak out about Obama’s eligibility

“And then,” Viviano said, paraphrasing the staffer, “they went in and said, ‘OK, it’s your daughter, now, we’ll go after.’

“And then Bill never said anything.”

Since the 2008 campaign, Clinton has insisted publicly that Obama is eligible for the White House.

He spoke about the issue in an April 2011 interview with ABC’s “Good Morning America,” when Donald Trump was urging Obama to release his long-form birth certificate to the public.

“If I were them, I’d be really careful riding that birther horse too much,” Clinton said. “Everyone knows it’s ludicrous.”

Read the preliminary findings of Sheriff Arpaio’s Cold Case Posse investigation after six months investigating Obama’s constitutional eligibility to serve as president in “A Question of Eligibility,” co-authored by Jerome Corsi and Mike Zullo.

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Previous stories:

Hillary supporter’s untold Obama horror stories

Tea party to Arizona: Check Obama’s eligibility

Sheriff Joe expands Obama probe to Hillary supporters

Hollywood producer heard Bill Clinton say Obama ineligible

High court justice: Obama birth certificate fishy

Russian media expose Obama birth ‘forgery’

Media blackout on Obama eligibility near-total

Mailman discouraged from telling Obama story

U.S. military purging ‘birthers’?

Immigration records missing for week of Obama’s birth

Sheriff Joe: ‘Tons’ more shocking info on Obama

O’Reilly: My probe better than Sheriff Joe’s

Donald Trump: Say it is so, Sheriff Joe

Sheriff Joe to Eric Holder: ‘Prove it!’

Arpaio: ‘Probable cause’ Obama certificate a fraud

What does law say about Obama’s eligibility?

Alinsky-style leftist ramps up effort to oust Sheriff Joe

100,000 line up to back Sheriff Joe

Obama backer arrested for death threats against Sheriff Joe

Justice Department blinks in battle against Sheriff Joe

Anti-Arpaio protesters ousted from meeting

Another protest against Sheriff Joe fails

Obama’s harassment of Sheriff Joe

‘Resign now’ protest against Sheriff Joe fizzles

Sheriff Joe targeted for ouster

Sheriff Joe ‘suspicious’ of motive behind Obama attacks

Sheriff Joe to Obama: I’ll keep doing my job

Arpaio gets death threats over Obama investigation

Sheriff Joe on Obama eligibility probe: ‘Where there’s smoke … ‘

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