Mueller Seeks White House Documents on Flynn

Investigators have also questioned witnesses about whether Michael T. Flynn was secretly paid by the Turkish government in the final months of the 2016 presidential campaign.

Mueller Issuing Subpoenas Through Washington Grand Jury

At least some of the subpoenas were related to Michael T. Flynn, the former national security adviser, but whether any related to other Trump campaign members was unclear.

White House Purging Michael Flynn Allies From National Security Council

Lt. Gen. H. R. McMaster, who succeeded Mr. Flynn as national security adviser, has slowly been removing some of his appointees, angering conservatives.

House Democrat From California Seeks Support to Impeach Trump

Citing grounds for a charge of obstruction of justice, Representative Brad Sherman introduced a proposed article of impeachment. But his efforts have virtually no chance of succeeding.

Jeff Sessions Will Testify in Public Before Senate Committee

The attorney general is expected to face questions Tuesday over his interactions with Russian officials and role in the firing of James B. Comey as F.B.I. director.

John McCain’s Questions Leave James Comey, and Observers, Confused

The Arizona senator appeared to conflate two separate investigations as he questioned the former F.B.I. director.