note of administration wide direction that executive branch personnel cannot participate in the impeachment inquiry under the current circumstances, signed by the deputy secretary of defense david norquist. cooper testified wednesday under subpoena. let's chew overall of this with our experts. it seems people in the administration who have been subpoenaed even though they're being told by the trump administration not to participate are participating anyway. >> they have a lot to say. clearly what we've been hearing over the past week and a half all sounds somewhat along the same lines, right? they lay out a chain of events that take place ever since president zelensky was elected and after his inauguration where you had u.s. officials attend, all of a sudden you start to see concern internally about u.s. money, u.s. aid, especially military aid, along with a meeting with president trump. so i think the most damning that we're hearing out of all of this is that their stories are very