U.S. House Speaker Nancy Pelosi has made it official, telling fellow Democrats she supports a formal impeachment inquiry of President Donald Trump.

She called reports indicating that Trump pressured Ukraine's leader to investigate Joe Biden's family "a betrayal of our national security" and a "betrayal of our election."

Trump insists he did nothing wrong when it comes to Ukraine and announced he'll release a transcript of a phone call with the Ukrainian president.

Immediately after her announcement, Trump tweeted:

"They never even saw the transcript of the call. A total Witch Hunt!"

Then he tweeted: "PRESIDENTIAL HARASSMENT!"

Earlier in the day the GOP-controlled Senate has approved a non-binding but symbolically important resolution calling on the Trump administration to immediately provide the House and Senate intelligence committees a copy of a whistleblower complaint involving President Donald Trump.

The measure put forward by Minority Leader Chuck Schumer passed by voice vote after Majority Leader Mitch McConnell endorsed the idea and noted that the bipartisan leadership of the Senate Intelligence Committee was working behind the scenes to obtain the complaint.

Story by the Associated Press