Ukraine Affair

House Democrats are set to launch a new phase of their impeachment inquiry on Thursday when former Ambassador Kurt Volker, until recently a top State Department representative to Ukraine, is scheduled to meet with investigators.

Then, on Friday, the intelligence community's inspector general, Michael Atkinson, is due on the Hill.

More witnesses are expected next week, all for depositions behind closed doors with members of Congress and their staff.

A tumultuous week in Washington has set the stage for an intense new congressional investigation into President Trump — and what could prove to be a historic clash between the White House and Congress.

The outlines are now clear about conduct that no one, including Trump, disputes: The president asked his Ukrainian counterpart to investigate the family of Vice President Joe Biden, a potential political rival in the 2020 presidential election.