A response to the formal summons from the Senate, notifying the Executive Office of the President of impeachment proceedings, was due at 6:00pm ET today. The White House has responded [WH pdf link – and embed below] with a seven-page position answer.

[Via White House] THE HONORABLE DONALD J. TRUMP, PRESIDENT OF THE UNITED STATES, HEREBY RESPONDS:
The Articles of Impeachment submitted by House Democrats are a dangerous attack on the right of the American people to freely choose their President. This is a brazen and unlawful attempt to overturn the results of the 2016 election and interfere with the 2020 election—now just months away. The highly partisan and reckless obsession with impeaching the President began the day he was inaugurated and continues to this day.




