Mike Johnson's speaker bid in peril despite Trump backing

Guests: Julia Ainsley, Ryan Reilly, Alexi McCammond, Jennifer Horn, Sahil Kapur, Sen. Sherrod Brown Tonight: New details on attacks in New Orleans and Las Vegas as the next administration bends reality for its own purposes. What we're learning about both attacks and the information wars surrounding them. Then, Biden's move to protect Donald Trump's political targets from his threats of retribution. And what we know about the first big test of the new Congress just hours from now.