everybody thought hillary clinton was unbeatable, right? but we put together a benghazi special committee, a select committee. what are her numbers today? her numbers are dropping. why? because she's untrustable. >> first, house majority leader kevin mccarthy appeared to reveal the benghazi committee's real purpose was to damage hillary clinton. now a former investigator for the benghazi committee, major bradley podliska, an air force reservist and self-described conservative republican, says he was fired when he raised concerns that the committee's work had become too partisan towards clinton. >> as i've stated, hillary clinton has a lot of explaining to do. we, however, did not need to shift resources to hyper focus on hillary clinton. i honestly do not believe this investigation was set up to go after hillary. i believe it shifted that way. the victims' families are not going to get the truth. and that's the most unfortunate thing about this. and i know this because the nine months of research i had done is now lost. i have no idea where it is. >> in an interview with nbc news the benghazi committee chairman, congressman trey gowdy, fired back.