Welcome back to a special edition of the lead, the White House in Crisis, right now.

The State Department's Inspector General is on Capitol Hill, briefing congressional committees

in what is being described as an urgent meeting as the impeachment

inquiry moves forward as CNN Sunland Sirfati reports the briefing comes as

House Democrats are warning President Trump and his administration not to

stonewall their investigation.

Amid the impeachment inquiry drama, the State Department Inspector General

shuttling to Capitol Hill today to give what congressional sources describe as an urgent

and highly unusual briefing.

The meeting happening behind closed doors with staffers from several key House and Senate committees,

requested specifically by the IG to quote,

provide staff with copies of documents related to the State Department

in Ukraine.

That cryptic email coming just hours after Secretary of State Mike Pompeo

attempted to prevent key witnesses from appearing on Capitol Hill.

They will be strengthening the case on obstruction if they behave that way.

House Intelligence Committee Chairman Adam Schiff today,

blasting the administration stonewalling, warning that blocking witnesses and documents will be considered obstruction of Congress's duties,

and would only strengthen Democrats'

hands if they drop Articles of impeachment.

Any effort by the Secretary, by the President or anyone else

to interfere with the Congress's ability to call before it relevant witnesses will be considered as

...