the whistle-blower, and with a lieutenant colonel alexander vendor been leaked information from the nspower. this as attorney general bill barr has confirmed the doj's reviewing information from rudy giuliani, related to ukraine. >> the doj has an obligation to open the door to anybody who wishes to provide us information that they think is relevant. as i did say to senator graham, we have to be very careful with respect to any information coming from ukraine. >> harris: i want to bring back, from our prior panel now, jason chaffetz, the former house oversight karen fox news contributor. to go down a slightly different lane. with you now, just to tap into your expertise. you, head of oversight, with investigations, pertinent to the conversation now. just set it up from there. >> well, lindsey graham is not just a senator. he's the chairman of the senate judiciary committee. there are plenty of takes, starting with joe biden, on video bragging about how he twisted the arms in ukraine to get a prosecutor dismissed by withholding u.s. funds. you start to go down this path, harris. you also