White House Tells Two Witnesses, Including Hope Hicks, Not to Cooperate With Congress

Democrats also continue to try to secure testimony from Mr. Mueller himself, but he is reluctant to testify. Representative Steny H. Hoyer of Maryland, the No. 2 Democrat, told reporters on Tuesday that Mr. Mueller should be subpoenaed if he refuses to testify voluntarily.

“He may want a subpoena, in which case I think we ought to issue a subpoena,” Mr. Hoyer said.

For now, Democrats have been left to try to figure out other ways to bring Mr. Mueller’s 448-page to life. On Monday, Mr. Nadler announced his committee would hold a series of hearings on the report with former federal prosecutors, legal experts and John W. Dean, who went to jail for his role in the Watergate affair.

Republicans, who remain closely aligned with the president, have repeatedly accused Democrats of being less interested in the truth than manufacturing a conflict with the White House that could provide a pretext for impeachment. On Tuesday, Representative Doug Collins of Georgia, the top Judiciary Committee Republican, called again for Mr. Nadler to move on from his obstruction-of-justice and abuse-of-power investigation. But this time, he painted Democrats’ interests in those topics as detracting from the real threat crystallized in the Mueller report: Russian election interference.

Mr. Collins called for Mr. Nadler to schedule “immediate, thorough, and productive hearings regarding Russia’s ability to influence our elections.”

Democrats rejected Mr. Collins’s request as a false choice, and said they were planning hearings on the topic he suggested — just likely in another committee.

Specifically, Representative Adam B. Schiff of California, the Intelligence Committee chairman, announced on Tuesday that his committee would also convene a series of hearings on Mr. Mueller’s findings related to Russia’s election interference efforts in 2016. The first hearing, he said, would likely focus on the F.B.I.’s decision to open a counterintelligence investigation, rather than a criminal investigation, and Mr. Trump’s pursuit of building a Trump Tower in Moscow until well into the presidential campaign, something he denied repeatedly.

“What are the implications of a presidential candidate seeking to make money in the capital of a hostile foreign power during the campaign and lying about it?” Mr. Schiff said at a Council on Foreign Relations event on Tuesday. “And why would that be a counterintelligence concern for the F.B.I. and for the country?”