U.S. President Donald Trump (L) and his wife Melania Trump arrive at the White House in Washington D.C. the United States, Aug. 4, 2019. Donald Trump said Monday the United States must condemn bigotry, racism and white supremacy in his first formal remarks from the White House, after two mass shootings within 13 hours over the weekend in Texas and Ohio. (Photo by Ting Shen/Xinhua)