Speaker Nancy Pelosi and Representative Adam Schiff warned that any attempt to stonewall the House’s request or intimidate witnesses would be construed as obstruction worthy of impeachment itself.

President Trump responded with a series of angry outbursts. In the Oval Office, next to a visibly uncomfortable president of Finland, he declared angrily that Democrats were “guilty as hell” of corrupting the 2016 election, that former Vice President Joe Biden was “corrupt” and “less smart now than he ever was,” and that a C.I.A. whistle-blower was “a spy, in my opinion.”

What’s next? The State Department’s inspector general, Steven Linick, has just emerged from briefing lawmakers behind closed doors about urgent material he signaled could be relevant to the Ukraine investigation. We’re following the latest in our live briefing.

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