WASHINGTON — The House committee investigating the Jan. 6 attack on the Capitol is laying out evidence on Thursday of how President Donald J. Trump tried to manipulate the Justice Department to help him cling to power after he lost the 2020 election.
At its fifth public hearing this month, the panel is taking testimony from three former top Justice Department officials who became ensnared in Mr. Trump’s efforts to misuse the attorney general’s office to overturn his defeat, an extraordinary instance of a president interfering with the nation’s law enforcement apparatus for his own personal ends.
“He wanted the Justice Department to legitimize his lies,” said Representative Bennie Thompson, Democrat of Mississippi and the chairman of the committee.
Committee aides who previewed the session said the panel would present new evidence about how Mr. Trump unsuccessfully pushed department officials to falsely declare that there was widespread fraud in the election, file lawsuits to benefit his campaign and appoint a conspiracy theorist as a special counsel to investigate the election. It will also trace his failed efforts to send false letters to state officials to subvert the election results and, finally, to replace the acting attorney general, who refused to go along with his plans.
Mr. Trump ultimately backed off after agency officials threatened mass resignations, but the committee is presenting his actions as a critical strand in a multilayered effort by the former president to subvert the election.
The witnesses scheduled to testify are Jeffrey A. Rosen, the former acting attorney general; Richard P. Donoghue, the former acting deputy attorney general; and Steven A. Engel, the former assistant attorney general for the Office of Legal Counsel.
Representative Adam Kinzinger, Republican of Illinois and a member of the committee, is expected to play a central role in the questioning of witnesses and presentation of evidence. He has hinted that the hearing could reveal more information about members of Congress who sought pardons after Jan. 6.
The story of how Mr. Trump attempted to intervene in the workings of the Justice Department to keep himself in office has been well documented by both the Senate Judiciary Committee and the House Jan. 6 committee, but aides to the House inquiry said Thursday’s hearing will contain new revelations.
Time and again, department officials told Mr. Trump after the election that his claims of widespread fraud were false, and prompted him to back down from some of his most extreme propositions.
The panel is planning at least two more hearings for July, according to its chairman, Representative Bennie Thompson, Democrat of Mississippi. Those sessions are expected to detail how a mob of violent extremists attacked Congress and how Mr. Trump did nothing to call off the violence for more than three hours.