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

U.S. House Speaker Nancy Pelosi (R) 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)

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House members vote on two articles of impeachment against U.S. President Donald Trump in Washington D.C. Dec. 18, 2019. The Democrat-led U.S. House of Representatives voted on Wednesday to impeach Donald Trump for abuse of power and obstruction of Congress. As the vote ended, Trump became the third president in the U.S. history to be impeached. (Chip Somodevilla/Pool via Xinhua)