Jan. 6 investigations

The House committee investigating the Capitol attack on Jan. 6, 2021, has so far used eight public hearings to lay out a detailed narrative of Mr. Trump’s efforts to overturn the 2020 election.

The panel, which is promising more evidence and hearings in the fall, has no power to prosecute but is weighing the largely symbolic step of making a criminal referral to the Justice Department.

The Justice Department is also conducting its own criminal investigation into the Jan. 6 attack, with lawyers questioning witnesses directly before a grand jury about the actions of Mr. Trump and some of his top advisers. Federal prosecutors have asked witnesses about Mr. Trump’s involvement in efforts to reverse his election loss.

Prosecutors have been particularly interested in the so-called fake electors plan pursued by Mr. Trump and his allies, in which his supporters in key battleground states presented themselves as alternate slates of electors, hoping to delay or block the Electoral College certification of Joseph R. Biden Jr.’s victory.