Naturally, he’s serious.

O’ROURKE: “Yeah, I’m talking about the future of this country and our ability to preserve and save and pass on this democracy to the next generation. It’s never been more attacked or more imperilled than it is under this administration, a president who has twice, that we know of you invited foreign powers to involve themselves in our election, committed crimes and sought to obstruct justice, lied to investigators, asked others to lie to investigators on his behalf now we have learned is threatening civil war in this country and threatens to arrest Adam Schiff, the principal investigator, to arrest him for treesing.”