Trump’s 2021 legal nightmare turns on money man who flipped before

The Trump Org now faces a criminal probe putting heat on a CFO who has cooperated with investigators before - up to a point. MSNBC’s Ari Melber reports on Allen Weisselberg’s key role in the case, with detailed reports on his rise through the Trump Org and original reporting drawing on interviews with people cooperating with the new probe and other eyewitnesses — with one saying he must be “shaking in his boots.”