Former KKK leader David Duke is considering running for a Congressional seat, with rumours he may challenge House majority whip Steve Scalise.

Duke, who was the grand wizard of the Ku Klux Klan in Louisiana from 1974-79, was elected as a Republican to the Louisiana House in 1989, and once attempted to run as a Republican presidential candidate, but received no delegates.

The Holocaust denier and white supremacist earlier this year endorsed Donald Trump's presidential bid, also suggesting he would make a good VP pick, and is expected to decide in the next week whether or not to challenge Scalise.

Scalise came under fire from Duke, who referred to him as a 'sell out', something he has accused Scalise of ever since the politician voted against the use of the confederate flag in Veteran's ceremonies, adding he had been inspired to run for a seat following the shooting of five police officers by a black gunman.

He told the Daily Beast: "I don't take any satisfaction in the fact that I was right, but I have been right. Unless European Americans stand up, they are going to lose everything they care about in this country.

"There are millions of people across the country who would like to have me in the Congress. I'd be the only person in Congress openly defending the rights and the heritage of European Americans. We are on the offensive today. There's no more defences."

Trump suffered a setback in his campaign after failing to disavow Duke after he praised the presidential hopeful, claiming he was unaware of the endorsement.