The cavalier casual way that Donald Trump talks about nuclear weapons is not only frightening but it goes counter to more than 70 years of bipartisan, presidential leadership of Republicans and Democrats who believed that we have to prevent other countries from getting nuclear weapons and we have to do what we can to decrease the number of nuclear weapons in the world.

I used to sit on the other end of Pennsylvania Avenue and wonder why the Senate was always going into recess, until in my first year I realized how intense the pressure was.

How do we prevent attacks? How do we protect our people?I think we've got to have an intelligence surge, where we are looking for every scrap of information.

I think that you can disagree with people and debate over their positions with issues without engaging in the politics of personal destruction.

[On the Chicago Cubs:] Being a Cubs fan prepares you for life - and Washington.

I have, ever since the first day of my campaign, called for criminal justice reform.

We're kind of in the wild west, and, you know, it would be very difficult to run for president without raising a huge amount of money and without having other people supporting you because your opponent will have their supporters.