Ronan Farrow: Why Allowing Karen McDougal Testimony Is Pivotal

Anderson Cooper asked Ronan Farrow how important he thinks Karen McDougal's story is to Trump's Manhattan trial.

"So the larger picture it's pivotal and it's a pivotal moment in this case that Judge Merchan is saying, look, this is essential material to establishing the narrative. the narrative being that there was indeed a scheme between donald trump and the national enquirer, and that these payments had an electoral intent," Farrow said.

"And the evidence of a series of payments...