It's been a whirlwind 24 hours. Yesterday, explosive new evidence from Lev Parnas - the Ukrainian-American businessman with ties to Rudy Giuliani - suggested that the then-ambassador to Ukraine was under surveillance before she was quickly fired by the Trump administration. Last night, the Democratic presidential contenders rallied around the President's impeachment. And this morning, the House members who'll 'prosecute' the impeachment case were unveiled. CNN senior writer Zach Wolf dives into the latest developments with CNN White House correspondent Stephen Collinson and CNN legal analyst Shan Wu.

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