good morning. thank you for joining us for a special edition of "cnn newsroom." i'm ryan nobles. poppy harlow and jim sciutto are off. a senate standoff over impeachment is under way on capitol hill. heading into the holidays, democrats and republicans refusing to give way on trial rules. and as the stalemate appears destined to stretch into the new year, democrats in the house of representatives are still fighting for the testimony of former white house counsel don mcgahn. even suggesting to a federal appeals judge that mcgahn's testimony could ultimately lead to more articles of impeachment. let's begin with lauren fox live on capitol hill. probably a lot of people taking