These kinds of tragedies [like shooting in Fort Lauderdale] have happened too often during the eight years that I've been president. The pain, the grief, the shock that they must be going through is enormous. I've asked me staff to reach out to the mayor down there and make sure that coordination between the state and local officials is what it should be. But I think we'll find out over the next 24 hours exactly how this happened and what motivated this individual.

The dollar is the reserve currency of the world.

The Supreme Court nominations [example]. I mean, the fact that Mitch McConnell, the leader of the Republicans, was able to just stop a nomination almost a year before the next election and really not pay a political price for it, that's a sign that the incentives for politicians in this town to be so sharply partisan have gotten so outta hand that we're weakening ourselves.

We remember the specter of sectarian violence -- al Qaeda's attacks on mosques and pilgrims, militias that carried out campaigns of intimidation and campaigns of assassination. And in the face of ancient divisions, you stood firm to help those Iraqis who put their faith in the future.

Generally the Constitution is a charter of negative liberties, says what the states can't do to you, says what the federal government can't do to you. But it doesn't say what the state or federal government must do on your behalf.

We have to all shoulder the responsibility for keeping the planet habitable, or we're going to suffer the consequences - together.

On my recent trip to Israel, I had the opportunity to visit Yad Vashem, Israel's national Holocaust memorial, and reaffirm our collective responsibility to confront anti-Semitism, prejudice, and intolerance across the world. On this Yom Hashoah, we must accept the full responsibility of remembrance, as nations and as individuals-not simply to pledge "never again," but to commit ourselves to the understanding, empathy and compassion that is the foundation of peace and human dignity.