Whatever you do won’t be enough, I heard their voices say. Try anyway. - Barack Obama

We spend over a trillion dollars, and pass countless laws, and devote entire agencies to preventing terrorist attacks on our soil, and rightfully so. And yet, we have a Congress that explicitly blocks us from even collecting data on how we could potentially reduce gun deaths. How can that be?
This is a political choice that we make to allow this to happen every few months in America. We collectively are answerable to those families who lose their loved ones because of our inaction.

We're also increasing the number of Syrian and other refugees we admit to the U.S. to 100,000 per year for the next two years.

More and more, we all confront difficult questions about how to prevent the slaughter of civilians by their own government, or to stop a civil war whose violence and suffering can engulf an entire region. I believe that force can be justified on humanitarian grounds, as it was in the Balkans, or in other places that have been scarred by war. Inaction tears at our conscience and can lead to more costly intervention later. That's why all responsible nations must embrace the role that militaries with a clear mandate can play to keep the peace.