Barack Obama: “He felt that was the case on his first bus trip, and he looks forward to the one we're taking next week.”

The full weight of the federal government is being brought down on a law-abiding elected official because she has dared to criticize the president.

And I will fight for that, even if I don’t always think it’s going to win.

When we choose, when we make that decision, I do believe – and there is evidence for this – that the world gets incrementally better, and that is a worthy goal and it’s worth fighting for.

A drift towards extremism was "not inevitable