The President does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat to the nation.

We Americans are not an inherently more violent people than folks in other countries. We're not inherently more prone to mental health problems. The main difference that sets our nation apart is what makes us so susceptible to so many mass shootings is that we don't do enough, we don't take the basic commonsense actions to keep guns out of the hands of criminals and dangerous people. What's different in America is it's easy to get your hands on a gun.

Obviously, if Congress wants to talk about anything, we're happy to provide information. We're committed to moving forward under the current act.

There are folks who will equivocate. They'll say, 'You know, I'm not a scientist.' Well, I'm not either. But the best scientists in the world know that climate change is happening.

If in fact the Republicans make some modifications [of Obamacare], some of which I may have been seeking previously, but they wouldn't cooperate because they didn't wanna make the system work, and re-label it as Trumpcare, I'm fine with that.

Certainly I've appreciated Angela Merkel as a partner.

We've got to stop the name-calling and we've got to stop looking at the next election. We've got to be focused on figuring out what we're doing for the next generation.