As the Senate kicks off the main phase of its third-ever impeachment trial today, Democrats and Republicans are expected to continue wrangling over its basic rules. That's because Majority Leader Mitch McConnell unveiled his plan to fast-track proceedings by giving each side only 24 hours over two days for opening arguments. Meanwhile, President Donald Trump's lawyers submitted a 110-page brief describing the charges as a "dangerous perversion of the Constitution" and calling for their dismissal.
What's next? Expect days of procedural jockeying behind closed doors — since senators aren't allowed to pipe up during proceedings.