Immigration is part of the reason why our economy is stronger and better positioned than most of our other competitors, is because we've got a younger population that's more dynamic when it comes to trade.

We reaffirm that on days like this, there are no Republicans or Democrats. We are Americans, united in concern for our fellow citizens.

Every decision, every debate, no matter how important it is, with the same question: 'What does this mean for the next election? What does it mean for your poll numbers? Is this good for the Democrats or good for the Republicans? Who won the news cycle?' That's just how Washington is. They can't help it. They're obsessed with the sport of politics.

We don't turn back. We leave no one behind. We pull each other up.

One of the things we're going to have to discuss and debate is how are we striking this balance between the need to keep the American people safe and our concerns about privacy. Because there are some trade-offs involved. I welcome this debate, and I think it's healthy for our democracy.

In Iraq and Syria, American leadership - including our military power - is stopping ISIL's advance, instead of getting dragged into another ground war in the Middle East, we are leading a broad coalition, including Arab nations, to degrade and ultimately destroy this terrorist group.

Part of what makes me most optimistic is if you look at the attitudes of young people. Across the board, young people are much more comfortable with respecting differences. They are much more comfortable with diversity.