CNN  —  Republicans are at a standstill over their investigation relitigating the January 6, 2021, attack on the US Capitol, with House Speaker Mike Johnson and the Republican leading the effort disagreeing on how to move forward. Johnson wants Republicans to stop investigating the former January 6 committee, including former GOP Rep. Liz Cheney, and narrow its focus, according to three sources familiar with the negotiations. But GOP Rep. Barry Loudermilk, who has been tapped to helm the probe,