information we're getting is good. that we're avoiding witness tampering. that we're going through that process. and then it will be public. >> cnn is also reporting that tim morrison, who is on the national security counsel, an adviser there inside the white house, when he testifies next week will corroborate some key elements of ambassador bill taylor's testimony which gets to the idea there was a quid pro quo in terms of ukraine military aid and also the meeting between the two presidents. my question to you is, why is it important, why is a quid pro quo important, and is it, in fact, necessary in your mind perhaps to impeach the president? >> yeah, to be very clear, there is no legal requirement for a quid pro quo. the president and his enablers and folks around him want you to believe that there's some kind of legal requirement for a quid pro quo. there isn't. just him asking a foreign power to interfere in a u.s. election is sufficient enough for us to