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U.S. First Lady Melania Trump (L), her son Barron (R) and Trump's grandson Joseph walk to board the Marine One en route to Camp David for the weekend, at the south lawn of the White House in Washington D.C., the United States, on Aug. 25, 2017. White House Press Secretary Sarah Huckabee Sanders told a briefing Friday that U.S. President Donald Trump, who left for David Camp, plans to visit U.S. state of Texas sometime early next week as Hurricane Harvey nears southern coastal states. (Xinhua/Yin Bogu)