We are going to trace more effectively, how these guns are ending up on the streets, to unscrupulous gun dealers, who often times are selling to straw purchasers. And cracking down on the various loopholes that exist in terms of background checks for children, the mentally ill.

What drags down our entire economy is when there's an ever-widening chasm between the ultra-rich and everybody else.

America does not presume to know what is best for everyone

In a summer marked by instability in the Middle East and Eastern Europe, I know the world also took notice of the small American city of Ferguson, Missouri - where a young man was killed, and a community was divided. So yes, we have our own racial and ethnic tensions.

All of us take offense to anyone who reaps the rewards of living in America without taking on the responsibilities of living in America. And undocumented immigrants who desperately want to embrace those responsibilities see little option but to remain in the shadows, or risk their families being torn apart.

That's what the leadership was teaching me, day by day: that the self-interest I was supposed to be looking for extended well beyond the immediacy of issues, that beneath the small talk and sketchy biographies and received opinions, people carried with them some central explanation of themselves. Stories full of terror and wonder, studded with events that still haunted or inspired them. Sacred stories.

As the wealthiest nation on Earth, I believe the United States has a moral obligation to lead the fight against hunger and malnutrition, and to partner with others.