TV bosses have ditched Hank Williams, Jr.'s iconic football anthem from a sports show in America after the singer compared President Barack Obama to Adolf Hitler in a TV interview.

The opinionated star was a guest on Fox news show Fox & Friends on Monday morning when he went too far in a rant about Democrat Obama's summer golf game with Speaker of the House John Boehner, a Republican.

He said, "That's like Hitler playing golf with (Jewish Israeli leader Benjamin) Netanyahu," and later referred to Obama and Vice President Joe Biden as "the enemy".

His ill-advised comments immediately landed the right-wing star in big trouble with TV bosses at sports network ESPN, who yanked his weekly kickoff anthem, Are You Ready For Some Football?, from their Monday Night Football show.

A spokesman says, "We are extremely disappointed with his comments, and as a result we have decided to pull the open from  tonight's telecast."

Williams, Jr. later released a statement attempting to explain himself, insisting he was simply "misunderstood".

He wrote, "Some of us have strong opinions and are often misunderstood. My analogy was extreme - but it was to make a point. I was simply trying to explain how stupid it seemed to me - how ludicrous that pairing was."