Warren Buffett to do whatever it takes to defeat Donald Trump

Billionaire investor Warren Buffett said on Monday night he would do whatever it took to defeat Donald Trump - including escorting people to the polls himself, as he addressed thousands of people gathered at an Omaha High School.

Warren Buffett (left) and Donald Trump

Buffet on Monday campaigned with Hillary Clinton to take on Trump. He questioned Trump's business record, questioned his bankruptcies and asked why the Republican presidential candidate would not release his tax returns.

The "Oracle of Omaha", as Buffet is called, went on to announce a new campaign called "Drive 2 Vote," aimed at bringing out voters in Nebraska's second congressional district, which offered a single Electoral College vote to the district winner.

"I will take at least 10 people to the polls who would otherwise have difficulty getting there," said Buffett, adding that he had reserved a 32-seat trolley for the day with a goal of getting the highest-percentage turnout of any congressional district in the country.

"Let's give America a civics lesson," he said.

The Midwestern clash comes in the background of a clash between a Muslim-American family who spoke against Trump at the Democratic National Convention to which Trump responded by attacking Khizr and Ghazala Khan, whose son served in the US Army and was killed in Iraq in 2004.

Terming Trump's comments as ''the final straw'', Buffet said Trump's family had not sacrificed like military families.

The legendary investor called out Trump to agree to a meeting where they would both release their tax returns.

Trump, a New York real estate developer had said he could not release his tax returns, a ritual of US presidential campaigns, until the Internal Revenue Service has completed an audit.

''Now I've got news for him," said Buffett, whose Berkshire Hathaway conglomerate is based in Omaha. "I'm under audit, too, and I would be delighted to meet him anyplace, anytime, before the election.

''I'll bring my tax return, he can bring his tax return ... and let people ask us questions about the items that are on there,'' Buffett added. He said Trump was ''afraid'' not of the tax-collecting IRS, but of voters.