Barack Obama: “This guy did something despicable 40 years ago.”

If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.

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.

I think when we act on that basis, it doesn't always work out, but over time things do get better.

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