Secret Files in Election Case Show How Judges Limited Trump’s Privilege

Court documents unsealed on Monday shed new light on a legal battle over which of former President Donald J. Trump’s White House aides had to testify before a grand jury in Washington that charged him with plotting to overturn the 2020 election, showing how judges carved out limits on executive privilege.

The trove — including motions, judicial orders and transcripts of hearings in Federal District Court in Washington — did not reveal significant new details about Mr. Trump’s efforts to cling to power. But it did open a window on important questions of presidential power and revealed how judges grew frustrated with Mr. Trump’s longstanding strategy of seeking to delay accountability for his attempts to overturn his defeat to Joseph R. Biden Jr.

The documents also created important — if not binding — precedents about the scope of executive privilege that could influence criminal investigations in which a current or former president instructs subordinates not to testify before a grand jury based on his constitutional authority to keep certain internal executive branch communications secret.

Starting in the summer of 2022, and continuing with the appointment of Jack Smith as special counsel later that year, the Justice Department undertook a wide-ranging and extraordinary effort to compel grand jury testimony from several close aides to Mr. Trump. Prosecutors believed the aides had critical information about the former president’s attempts to overturn the results of the election.

The effort, which ended in the spring of the following year, was largely intended to obtain firsthand accounts from key figures who had used claims of executive privilege and other legal protections to avoid testifying to investigators on the House committee that examined the Jan. 6, 2021, attack on the Capitol and the events leading up to it.