first-hand witnesses. this was based on hearsay or conversation. two of the key ingredients that came out, one is mister kent did believe joe biden was involved in quid pro quo. the other key proponent of this is mister kent warned the previous administration about hunter biden saying there's potentially damaged improprieties that might come out of that and they ignore that at the time and kept it coming back full circle. >> on the issue with the bidens there's been talk about trying to subpoena them. the gop doing that to try to get them before a hearing and testimony but here are a number of headlines talking about that point, nbc news.com there is no evidence for trump's biden ukraine accusations, the new yorker the invention of the conspiracy theory on biden and ukraine. the intercept says a republican conspiracy theory about a biden and ukraine scandal has gone mainstream but it is not true. as for ideas that they would be able to subpoena the two of them