Each wave of immigrants that have come in have been able to assimilate, integrate and then rise up and become part of this great American Dream.

In the end, that's what this election is about. Do we participate in a politics of cynicism or a politics of hope?

We too often let the material things serve as indicators that we're doing well, even though something inside us tells us that were not doing our best. That we are avoiding that which is hard, but also necessary. That we are shrinking from rather than rising to the challenges of the age.

I hoped for something else. It's a simple dream, but it speaks to us so powerfully because it is our dream - one that exists at the very center of the American experience. One that says if you're willing to work hard and take responsibility, then you'll have the chance to reach for something else; for something better.

We need to find a way forward to make sure that we can stop terrorists while protecting the privacy, and liberty, of innocent Americans.

I think it's fair to say that [Donald Trump] and I are sort of opposites in some ways.

I believe that we have better ideas. But I also believe that good ideas don't matter if people don't hear them.