A subpoena issued by the House Select Committee to Investigate the January 6 Attack on the United States Capitol seeking private cellphone information from Verizon isn’t valid for at least five reasons, according to a lawsuit filed earlier this week in federal court by a noted constitutional law professor.

Professor John Eastman at the Ellipse, near the White House, on Jan. 6, 2021. Brendan Smialowski/AFP via Getty Images