Warnings over Trump inquiry fly between Pompeo and Democrats

President Donald Trump talks to media before boarding Maine One at the White House in Washington, Friday, Aug. 30, 2019, en route to Camp David in Maryland. (AP Photo/Carolyn Kaster)

Italian Premier Giuseppe Conte, right, and U.S. Secretary of State, Mike Pompeo pose for the media following their meeting at Chigi Palace premier’s office in Rome, Tuesday, Oct. 1, 2019. U.S. Secretary of State Mike Pompeo is in Italy at the start of a four-nation tour of Europe as the push to impeach President Donald Trump gains steam at home. (AP Photo/Andrew Medichini)

WASHINGTON — Setting a defiant tone, the Trump administration resisted Congress’ access to impeachment witnesses, even as House Democrats warned such efforts themselves could amount to an impeachable offense.