How you staff, particularly the chief of staff, the national security adviser, your White House counsel, how you set up a process in the system to surface information and generate options for a president, understanding that ultimately the president is going to be the final decision-maker. That's something that has to be attended to right away.

I have Muslim members of my family. I have lived in Muslim countries.

I was pretty realistic to people about what we could get done, and the situation we were in, and trying to tamp down expectations. If you listen to my stump speeches, if you listen to what I said at Grant Park, I kept on saying, "Look, this is not just about me, this is not going to happen in one year, or one term, or even one presidency." And we tried to layer into everything we were saying a sense of hope, but also realism.

Our hearts are broken today for the parents and grandparents, sisters and brothers of these children and the families of the adults we lost....May god bless the memory of the victims and in the words of scripture heal the broken hearted and bind up their wounds.

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.

The United States wants a strong United Kingdom as a partner. And the United Kingdom is at its best when it's helping to lead a strong Europe.

We can be civil to each other, and we can try to express ourselves acknowledging that we're all patriots, we're all Americans, and not assume the absolute worst in people's motives.