In this Sept. 24, 2015, file photo, Chinese President Xi Jinping, Vice President Joe Biden, stand for the U.S. national anthem during an arrival ceremony in Andrews Air Force Base, Md. (AP Photo/Carolyn Kaster, File)
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In this Sept. 24, 2015, file photo, Chinese President Xi Jinping, Vice President Joe Biden, stand for the U.S. national anthem during an arrival ceremony in Andrews Air Force Base, Md. (AP Photo/Carolyn Kaster, File)
