WASHINGTON, DC - SEPTEMBER 25: Facebook CEO Mark Zuckerberg and Dr. Priscilla Chan arrive for a state dinner in honor of Chinese President President Xi Jinping and his wife Peng Liyuan at the White House September 25, 2015in Washington, DC. Xi arrived in Washington, the second stop of his state visit to the United States, on Thursday after a busy two-and-a-half-day stay in Seattle. (Photo by Chris Kleponis-Pool/Getty Images)
