Impeachment 101. In paperback and Kindle. CNN offers this recap: Dems prep next impeachment phase House investigators, bracing for more witnesses to defy their demands at the behest of the White House, are now signaling they are prepared to begin the next phase of their impeachment inquiry even if their subpoenas are ignored . A number of House Democrats told CNN's Manu Raju and Jeremy Herb that it's time for that next step, saying they've already built enough evidence to advance the proceedings to the public stage. Reminder -- Rep. Adam Schiff, the chairman of the House Intelligence Committee, told CNN some of the transcripts of the closed-door interviews could be made public as early as this week. Key Documents Need a refresher on what happened when? Check out the key documents CNN has annotated below: The whistleblower complaint The White House transcript of Trump's Ukraine phone call The Ukraine text messages The indict
