U.S. House passes Trump impeachment, trial uncertainty remains

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U.S. House Speaker Nancy Pelosi speaks during a press conference after the House voted to impeach President Donald Trump in Washington D.C. Dec. 18, 2019. The Democrat-led U.S. House of Representatives voted on Wednesday to impeach President Donald Trump for abuse of power and obstruction of Congress. (Photo by Ting Shen/Xinhua)