Buffett rebukes Trump, questions his business skill

Billionaire investor Warren Buffett on Monday campaigned alongside U.S. Democratic presidential candidate Hillary Clinton at a rowdy rally in his home state of Nebraska, where he challenged Republican Donald Trump to release his tax returns and questioned Trump's business acumen.

Trump, a New York real estate developer making his first run at public office, has said he cannot release his tax returns, a ritual of U.S. presidential campaigns, until the Internal Revenue Service has completed an audit.  Read more.