"But the idea that Obama is a Muslim is factual".- Politifact
Intended typo?
Hank Williams Jr. says Barack Obama is a Muslim 
Country singer Hank Williams Jr., who prides himself on being politically incorrect, took a moment during a Sept. 2, 2012, concert in Fort Worth to hammer misgivings about President Barack Obama.
As reported by critic Thor Christensen, who reviewed Williams’ performance at the Stockyards Music Festival for the Dallas Morning News, Williams said to a less-than-unanimous cheer: "We’ve got a Muslim for a president who hates cowboys, hates cowgirls, hates fishing, hates farming, loves gays, and we hate him!"
Most everything in the singer’s statement shakes out as matters of opinion, which can’t be fact-checked. PolitiFact also did not wade in after Williams compared Obama golfing with House Speaker John Boehner to Adolf Hitler playing with Benjamin Netanyahu, Israel’s prime minister. (After Williams made that October 2011 analogy, he no longer sang the theme song for ESPN’s "Monday Night Football."
But the idea that Obama is a Muslim is factual.
Such claims also have been gauged before -- and found lacking in evidence.
As PolitiFact noted in an Aug. 26, 2010, story, the president’s memoirs and independent biographies indicate that Obama was not raised in a particular faith, but he became a Christian when he was in his 20s while working as a community organizer in Chicago.
Still, Obama had a Muslim grandfather, Hussein Onyango of Kenya, and his Indonesian stepfather, Lolo Soetero, was Muslim, as biographer Davis Maraniss has written. Also, as a boy Obama was instructed in Islam at a school in Jakarta. Later, Maraniss writes, many of Obama’s college friends were Muslim.
In a July 27, 2012, opinion article in The Washington Post, Maraniss said: "None of this adds up to Obama being Muslim, except in the minds of conspiratorialists."
http://www.politifact.com/texas/statements/2012/sep/04/hank-williams-jr/hank-williams-jr-says-barack-obama-muslim/
= new reply since forum marked as read
The word factual does not mean true, it means pertaining to facts.
"Obama is a Muslim" is a factual claim because it is a claim of a fact, and thus can be fact-checked and found to be true or false. (Unlike an opinion. You cannot really fact check "Obama is ugly."
I wouldn't phrase it that way some some will surely mis-read it, but I understand it.
The bigger problem is saying "idea" rather than "claim."
Best would be "The claim that Obama is a Muslim is a claim of fact."
that the fact-based ("factual" ones, such as whether he is a Muslim, can be ... and that this one is factually incorrect.
Ever since the pro-stupidity losers started wearing Bocephus t-shirts I've found him repugnant.
(sorry to people who may like his "music" 
Interesting factoid:
"Bocephus is a nickname which was given to country singer Hank Williams Jr. He was given the nickname by his father who started calling him Bocephus because he thought that Hank looked like a ventriloquist with the same name." Source: ask.com
