The incident escalated a campaign by the ousted Law and Justice party to resist the transfer of power after it lost its parliamentary majority in October.
A defendant in the election interference case is arguing that the district attorney overseeing it and a special prosecutor she hired should be disqualified.
Neri Oxman, a former M.I.T. professor, is accused of copying from Wikipedia. Her husband, Bill Ackman, vowed to check the work of the entire M.I.T. faculty.
House Democrats released evidence that the former president took in at least $7.8 million from foreign entities while in office, engaging in the kind of conduct the G.O.P. is grasping to pin on President Biden.