it's an important piece of understanding how the republican argument here, which is biden/burisma is one avenue of it and the other avenue is the sort of 2016 democratic/ukraine collusion conspiracies. but how these came to be and how they got so close to the president, we think that they might be what republicans decide to bring to the senate trial if there is one. >> michael, the parnas being outside the tent now seems like a really huge development. i'm curious what you make of the noises that he is obviously making. the fact that he's turned over documents to the house intelligence committee and talking about wanting to testify, et cetera. >> it's pretty clear that parnas has been trying to sort of dangle the idea that he has useful information before the house intelligence committee in order to get immunity and i think he thinks that may help him with the southern district. i'm not sure it will.