"Do you think things outside the United States cannot be relevant to an understanding of how to apply the American Constitution? That's what's at issue. What is at issue is the extent to which you might learn from other places facts that would help you apply the Constitution of the United States. And in today's world, as I've said, where experiences are becoming more and more similar, I think that there is often -- not a lot, not always -- but in a finite number of instances there is something to learn about how to interpret this document."