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U.S. Chief Justice John Roberts (C) walks through the halls of the U.S. Senate after swearing in for the Senate impeachment trial against President Donald Trump, in Washington D.C., the United States, on Jan. 16, 2020. U.S. Chief Justice John Roberts was sworn in on Thursday afternoon on the Senate floor for the long-awaited impeachment trial of U.S. President Donald Trump, the third president in U.S. history to face such a trial in the upper chamber. (Photo by Ting Shen/Xinhua)
