Rachel Maddow opened her MSNBC show Tuesday night with a 22-minute segment laying out the case for impeaching Donald Trump. Here’s an excerpt:

“When the process starts, I’m not sure anybody who’s being honest can tell you how ultimately it’s going to end. Today when Speaker of the House Nancy Pelosi announced in an address to the nation that the House of Representatives is opening impeachment proceedings against President Donald J. Trump, she did make U.S. history. This is just something that hasn’t happened very many times in the course of our country. Because of that, I think we’re kidding ourselves if we think there’s some typical way this is supposed to go now. There isn’t a typical impeachment process. There’s no way to say how history suggests this will unfold or how this thing would typically be handled or what’s a departure from consistent previous precedent. There is constitutional guidance for what happens here, but there is very little historical precedent from which we can extrapolate.”

“You can see now that this is not just spinning out as some other Trump norm-breaking Trump scandal that never goes anywhere. You can see now that this is the place where at least someone is finally trying to draw a line.”

Watch the full segment above.