U.S. Democratic presidential candidate Hillary Clinton speaks to the media before boarding her campaign plane at the Westchester County airport in White Plains, New York, U.S. September 19, 2016. REUTERS/Carlos Barria

Republican presidential nominee Donald Trump speaks at a rally with supporters at High Point University in High Point, North Carolina, U.S. September 20, 2016. REUTERS/Jonathan Ernst

Traders work at the post where Allergan stock is traded on the floor of the New York Stock Exchange (NYSE) April 6, 2016. REUTERS/Brendan McDermid

Brad Katsuyama, President and CEO of IEX Group, Inc. speaks at the Sandler O'Neill + Partners, L.P. Global Exchange and Brokerage Conference in New York, June 4, 2015. REUTERS/Mike Segar

Byron Taylor, a suspended guard at New York City's Rikers Island jail complex, leaves the United States District Court in the Manhattan borough of New York, U.S. on September 20, 2016. REUTERS/Alex Wroblewski

Byron Taylor, a suspended guard at New York City's Rikers Island jail complex, leaves the United States District Court in the Manhattan borough of New York, U.S. on September 20, 2016. REUTERS/Alex Wroblewski

Byron Taylor, a suspended guard at New York City's Rikers Island jail complex, leaves the United States District Court in the Manhattan borough of New York, U.S. on September 20, 2016. REUTERS/Alex Wroblewski

Officials count ballots by the camera after polls close at a polling station for parliamentary elections in Amman, Jordan, September 20, 2016. REUTERS/Muhammad Hamed