Barack Obama: “What we can't do is think that somehow, if we draw a moat around this country, that we're going to be able to avoid…”

When we choose, when we make that decision, I do believe – and there is evidence for this – that the world gets incrementally better, and that is a worthy goal and it’s worth fighting for.

The effort, he said, “should outrage all Americans, regardless of how they feel about Congresswoman Omar’s political views.”

I think when we act on that basis, it doesn't always work out, but over time things do get better.

It is a decision about how do we face and embrace this finite amount of time we have on the planet.