Guests: Rep. Eric Swalwell, Melanie Zanona, Noah Lanard, Alex Wagner A federal judge orders the Signal chat to be preserved as the attorney general activates pundit mode. Tonight: renewed calls for accountability in the wake of a national security failure. Then, why Elise Stefanik had her White House job revoked as Republicans panic about Democratic gains. Plus, the truth behind Kristi Noem's photo op in El Salvador. And Alex Wagner reports on the authoritarian threat to free speech on campus.