mueller could investigate his finances. he said it's time for rosenstein to order mueller to limit the scope of his investigation to the four corners of the order appointing him special counsel. if he doesn't, then mueller's investigation will eventually start to look like a political fishing expedition. do you have any concerns about whether or not he can supervise the investigation? >> i think in cases like this, it's best practices to -- if you've opined on this specific subject, to make sure that it -- people have confidence by not putting yourself in that position. >> so you think he should recuse. >> i think that's probably the right thing. i think jeff sessions did the right thing, and it has ticked off trump as we have seen ever since then. i don't want to dismiss the idea that special prosecutors should have limits on them. that's a long time and fair concern about these types of investigations. >> sure. >> but he's specifically commented on this. and i will say, it's going to be difficult for both republicans who went after peter strzok to