Senate Republicans are poised to block an effort to establish a bipartisan, independent commission to study the Jan. 6 attacks on the U.S. Capitol. LEARN MORE: Mother of fallen Capitol Police officer lobbies GOP senators on Jan. 6 commission: https://abcn.ws/3vxc5jU SUBSCRIBE to GMA's YouTube page: https://bit.ly/2Zq0dU5 VISIT GMA's homepage: https://www.goodmorningamerica.com #CapitolRiots #MitchMcConnnell #GOP #BrianSicknick #MAGA