AdvertisementJan. 6 panel subpoenas a Trump ally who promised to pursue his election fraud claimsUpdated October 13, 2021Claudia GrisalesfacebookEmailFormer Department of Justice official Jeff Clark speaks during a news conference on Sept. 14, 2020. The House select committee investigating the Jan. 6 riot at the U.S. Capitol has issued a subpoena for Clark. (AP)This article was originally published on October 13, 2021.