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WASHINGTON, DC - SEPTEMBER 25: U.S. First Lady Michelle Obama and U.S. President Barack Obama wait on the North Portico for the arrival of Chinese President Xi Jinping and his wife Madame Peng Liyuan ahead of a state dinner at the White House September 25, 2015 in Washington, DC. Obama and Xi announced an agreement on curbing climate change and an understanding on cyber security. (Photo by Chip Somodevilla/Getty Images)