Senate majority leader Mitch McConnell and Minority leader Chuck Schumer give opening statements at the impeachment trial of President Donald Trump.
Trump was charged with abuse of power by withholding US military aid to Ukraine trying to force them to investigate Democrat Joe Biden.
He also faces another charge of obstruction of Congress by refusing to cooperate with their resulting investigation.
The Constitution gives the House the sole power to impeach a president.
The Senate has the final verdict by convening as the impeachment court for a trial.
Trump tasked eight of his Republcian defenders with rallying support in the court of public opinion.
McConnell had promised to set rules similar to Bill Clinton's trial in 1999.
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