stunning move coming one bay after damning testimony from the top u.s. diplomat in ukraine. more on that in a second. first, these republican lawmakers led by florida congressman matt gates walked into this secure room in the house basement just as the deputy assistant defense secretary sat down for her deposition. >> we're going to try to go in there and we're going to try to figure out whats going on on behalf of the millions of americans that we represent that want to see this it congress working for them and not obsessed with attacking a president who we believe has not done anything to deserve impeachment. >> once they got inside a shouting match erupted between committee members and they're colleagues. one democrat says this is all an effort to prevent even more dampidamp idamp -- damaging information from going public. >> you may wonder why is it happening now? bill taylor gave a devastating opening statement yesterday, they're freaked out.