because oversight does indeed have this big investigation that they have going on. give us in a nutshell what the key things are they'll be looking at. >> reporter: well, look they've been looking at the way the executive operates for quite a long time. if i remember correctly, the original letters about security clearances were sent to the white house and signed by the panel's previous chairman,gowdy. this has drawn the attention of lawmakers for quite a while. congressional oversight can get into a lot of things that this administration does. around the folks who are closest to the president, folks who haven't been senate confirmed, folks who don't control a budget or have money they have to spend, it's a lot more difficult for congress to exert its authority. they don't have the same levers they can pull here. you know, we were -- we are inching towards a fight. it will happen at some point over the next two years, i guarantee you. one of these congressional committees issues a subpoena or demands testimony from someone at the white house who just