U.S. Republican presidential nominee Donald Trump speaks at a campaign event at Trump Doral golf course in Miami, Florida, U.S. July 27, 2016. REUTERS/Carlo Allegri

U.S. Republican presidential nominee Donald Trump speaks at a campaign event at Trump Doral golf course in Miami, Florida, U.S. July 27, 2016. REUTERS/Carlo Allegri

U.S. Republican presidential nominee Donald Trump speaks at a campaign event at Trump Doral golf course in Miami, Florida, U.S. July 27, 2016. REUTERS/Carlo Allegri

U.S. Republican presidential nominee Donald Trump arrives at a campaign event at Trump Doral golf course in Miami, Florida, U.S. July 27, 2016. REUTERS/Carlo Allegri

Men dump buckets of ice water and plastic balls onto former NBA player Yao Ming as Yao takes part in the ALS ice bucket challenge in Beijing August 23, 2014. REUTERS/Kim Kyung-Hoon/File Photo

Men dump buckets of ice water and plastic balls onto former NBA player Yao Ming as Yao takes part in the ALS ice bucket challenge in Beijing August 23, 2014. REUTERS/Kim Kyung-Hoon/File Photo

Golf - British Open - Australia's Adam Scott hits out of the bunker on the first hole during the third round - Royal Troon, Scotland, Britain - 16/07/2016. REUTERS/Russell Cheyne

Pak Se-ri of South Korea tees off on the third hole during the third round of the Kraft Nabisco Championship LPGA golf tournament in Rancho Mirage, California, April 6, 2013. REUTERS/Danny Moloshok