Trump is not somebody who`s fit to be president in any circumstances. I would feel deeply frustrated, not because anything he said about me, but because I would fear for the future of our country.

The only time I get frustrated with activist criticism is if I have recognized them, and invited them to work with me to figure out how we solve this problem that they're concerned about, and either they don't engage out of the sense of purity - "I'm not going to shake his hand" - or you're not sufficiently prepared so you don't even know what to ask for, or you're not being strategic as an activist and trying to figure out how the process has to work in order for you to get what you want.

In order for us to compete with China, we've also got to make sure, though, that we're taking - taking care of business here at home. If we don't have the best education system in the world, if we don't continue to put money into research and technology that will allow us to create great businesses here in the United States, that's how we lose the competition.

We may never understand what leads anybody to terrorize their fellow human beings. Such violence, such evil is senseless. It's beyond reason.

The United States, therefore, works to ensure that any actions we take are consistent with international laws and norms - including those reflected in the Law of the Sea Convention. It's worth remembering that our presence in the region is nothing new.

Iran won't pursue nuclear weapons because 'it's contrary to their faith.'

Gabby Giffords deserves a vote. The families of Newtown deserve a vote. The families of Aurora deserve a vote. The families of Oak Creek, and Tucson, and Blacksburg, and the countless other communities ripped open by gun violence - they deserve a simple vote.