New York, July 25 (RHC)-- The U.S. Republican Party's biggest donor Charles Koch has likened the choice between Democratic presumptive nominee Hillary Clinton and her Republican rival Donald Trump to a choice between cancer and a heart attack, implying a lack of options for American voters in the upcoming presidential elections.

Koch made the comment in an interview, expressing his reluctance to choose between Clinton and Trump, as the two are involved in a tight race in the run-up to 2016 presidential election in the United States.  Koch said: "If I had to vote for cancer or heart attack, why would I vote for either?"

When asked what he thought of the presidential race, the Republican mega donor replied: "I see two people that, as of this point, we're not supporting."  Koch also accused the media of spinning his words in an interview he had in April about whether he would endorse Clinton in the presidential race.

As for the Republican nominee, Koch described Trump as "a fine fellow underneath," but said he found the New York businessman's principles and policies "antithetical" to his own. 

The Koch brothers are the sons of Fred C. Koch, who founded Koch Industries, the second-largest privately held company in the United States.  The brothers, who have contributed heavily to conservative campaigns and think tanks, are among the best known Republican donors, and potential GOP candidates court their favor.

The Kochs spent some $400 million on U.S. politics in 2015 and are planning to cash out about $900 million to shape this year's presidential election.