We wish to begin with a note of thanks to Richard Morgenstern, Jeffrey Hopkins, Laurie Johnson, Daniel Lashof, and Kristen Sheeran for their comments on our article, Climate Change and U.S. Interests. The comments have helped our own thinking on the subject, and it is gratifying to know that our paper stimulated such thoughtful responses. In the few pages we have for our reply, we focus on the claims that are most important and in the greatest tension with our article.