Lupe Fiasco is known for freely expressing his no holds barred political commentary and anti-establishment views in his music, but now he'll be taken to task for some of the controversial statements he's made against President Barack Obama.

Bill O'Reilly, host of Fox New show The O'Reilly Factor who has antagonized many rappers on his show, has invited Lupe to defend comments the Chicago rapper made against Obama last week in an interview with CBS.

As previously reported, Lupe was asked about the politically charged content of his latest album, Lasers and in response called President Obama the "biggest terrorist" in America.

"My fight against terrorism, to me, the biggest terrorist is Obama in the United States of America," he said.

Lu alleged that the actions of Obama and the United States government are ultimately to blame for terrorism abroad. "You know the root cause of terrorists is the stuff the U.S. government allows to happen. The foreign policies that we have in place in different countries that inspire people to become terrorists," he said.

In addition to his radical views on the U.S. government, Fiasco also scoffed at civic duty. "I don't vote. No I don't vote. I don't get involved in politics. It's meaningless. To be honest," he said.

On Tuesday [June 14] Bill O'Reilly called Fiasco out for his comments and even insulted him for his views and refusal to appear on his show. "Mr Fiasco has been invited on 'The Factor' but has declined, possibly because he could not possibly defend that remark, which makes him a pinhead. Now the reason I say I wish I was named Lupe Fiasco, wouldn't it be great, 'The Fiasco Factor'? I mean, it would be tremendous," O'Reilly told Fox News viewers.

Fiasco later tweeted "Whoa! I got invited to the O'reilly facter and turned it down??? Thats news to me...would NEVER turn down the opp to push billys buttons." The conscious rapper has since agreed to appear on an episode of "The O'Reilly Factor" that will air next week, according TheLupE.N.D. blog.

Fiasco has previously appeared on the satirical news show The Colbert Report where he notably shared one of his most fundamental political beliefs: "You should criticize power even if you agree with it."