Roberts will decline.
Or just lie and lie and LIE; not to mention makeup stuff.
Roberts will decline.>>> impeach him then
Roberts will have to clear it with Buckwheat.
Then subpoena him. Just because he sits on the scotus doesn't mean he's above the law or above a congresional subpoena.
It would be like either the potus or congress ignoring a court ruling.
Not only co-equal, but co-accountable to the others as well.