Some may still deny the overwhelming judgment of science, but none can avoid the devastating impact of raging fires, and crippling drought, and more powerful storms.

My top priority in any trade negotiation is expanding opportunity for hardworking Americans. It's no secret that past trade deals haven't always lived up to their promise, and that's why I will only sign my name to an agreement that helps ordinary Americans get ahead, the bill put forward today would help us write those rules in a way that avoids the mistakes from our past, seizes opportunities for our future and stays true to our values.

I think I did in the sense that there's a whole generation coming up behind us that was engaged, inspired, worked for change during the course of my presidency, saw what was possible. And that generation, it's coming.

It is my firm belief that it will be in the interests of the United States, especially our economic interests, to pursue comprehensive immigration reform.

At the moment that we persuade a child, any child, to cross that threshold, that magic threshold into a library, we change their lives forever, for the better

When people see opportunity, when they have a sense of control of their own destiny, then they're less vulnerable to the propaganda and twisted ideologies that have been attracting young people - particularly being turbocharged through social media.

In Europe, where the terrorist threat is probably greatest at the moment, the amount of information-sharing that's been taking place, the effectiveness of law enforcement across borders gives us the ability to protect ourselves while still being true to the basic precepts of our liberal democracies. I hope that that continues, and it is something that I think we should be worried about.