Almost simultaneously, House impeachment managers responded to an earlier Trump filing, saying the president had engaged in "corrupt conduct... to cheat in the next election" and that the Senate should remove him from office "following a fair trial."
Democratic House Speaker Nancy Pelosi signed the articles, which charge Trump with abuse of power and obstruction of Congress, before they were ceremonially walked through the Capitol to the Republican-controlled Senate.
US Chief Justice John Roberts takes charge of trial in Senate, gives the oath office to 99 of the 100 senators, who will act as jurors. One was missing because of a family medical problem.
McConnell said he expected the House of Representatives to deliver the articles of impeachment against Trump to the upper chamber on Wednesday. Trump faces charges of abuse of power and obstruction of Congress, and the 100 senators will be his judge.
As the third presidential impeachment trial in US history began in earnest, Trump's chief legal defender argued the Democratic case was a baseless effort to overturn the 2016 election but a top Democratic lawmaker said there was "overwhelming" evidence of wrongdoing.
US Senate majority leader Mitch McConnell has attacked President Donald Trump’s decision to pull troops from Syria as “a strategic nightmare” as scattered fighting flared in the north of the country despite a ceasefire deal.
“Ukraine should investigate the Bidens... Likewise, China should start an investigation into the Bidens... So I would say that President Zelensky, if it were me, I would recommend that they start an investigation
The bill, to be introduced by Republican Senator Pat Toomey and Democrat Chris Van Hollen, would also impose secondary sanctions on banks that do business with entities found to violate the law guaranteeing Hong Kong's autonomy.
Trump's statement on Twitter comes as the United States is enduring the greatest crises of a generation: a coronavirus pandemic that has claimed more than 150,000 lives, a crippling recession sparked by the outbreak and nationwide protests against police violence and racism.