Former Vice President Mike Pence says he will fight a subpoena by the special counsel overseeing Trump investigations to compel his testimony before a grand jury.

Special counsel Jack Smith, appointed by the Justice Department, is investigating efforts by former President Donald Trump and his allies to overturn the results of the 2020 election. Trump spent the days before Jan. 6, 2021, aggressively pressuring Pence to reject the outcome, even though Pence had no power to do so. Pence was at the U.S. Capitol presiding over a joint session of Congress as Trump’s supporters violently stormed the building that day.