need to hear from fiona hill today to build their impeachment case? >> fiona hill is not a central part of this -- of this query. but she is somebody who can support some of the claims that democrats are making. essentially that donald trump and rudy giuliani were doing this operation and going around the officials within the white house and the state department to try to set up this sort of shadow diplomacy with ukraine that was built around pressuring them and to investigate corruption, meaning joe biden and his son. she was, as you said, not there at the time of that -- those text messages were exchanged or that phone call with donald trump and the ukrainian president but she was there for the lead-up and she had complained about rudolph giuliani's role during that time, complaints that she took to people like john bolton before she left so she's a key