Warren Buffett, chairman and chief executive officer of Berkshire Hathaway Inc., speaks during an event with Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, not pictured, at Sokol Auditorium in Omaha, Nebraska.

Donald Trump absolutely, positively should not bow to pressure from billionaire Warren Buffett to release his taxes.

Trump has been under fire since it was revealed that he used a nearly $1 billion loss to his advantage to avoid paying federal income taxes. He called out Buffett during the second presidential debate on Sunday night as one of Hillary Clinton's supporters who has also used tax loopholes to pay less in taxes. Buffett fired back, saying he has paid federal income tax every year since 1944, when he was 13 and released detailed information about his taxes.