Happening now historic week.

Partisan battle lines are drawn as President Trump stands poised to become

only the third president in American history to be impeached, setting the stage

for a trial of the Senate.

Out of line, Senate Minority Leader Chuck Schumer slams Majority Leader Mitch McConnell

for coordinating with the White House on the President's trial defense

and Schumer calls for top White House on the President's trial defense and Schubert calls for top

White House officials to appear as witnesses. Twitter tantrum. President

Trump goes on a social media rampage venting his outrage at his looming impeachment and

attacking those he sees as political foes including the House Speaker

Nancy Pelosi and former FBI director James Comi.

And polling for impeachment.

Americans speak out on the political crisis in new polls

showing the country deeply divided

over whether the president should be impeached and removed from office.

I'm Wolf Blitzer, you're in the situation room. President Trump is just days away from becoming only the third US president to be

impeached by the House of Representatives and now Democrats are asking that

four White House officials testify in the subsequent Senate trial, including acting Chief of Staff Mick Mulvaney and former National Security Advisor John Bolton, Senate Minority Leader Chuck Schumer, making that request

in writing to Majority Leader Mitch McConnell and separately blasting McConnell for

coordinating with the White House on the President's defense,

calling that, and I'm quoting now, totally out of line.

We'll talk about that and more with Congresswoman

...