International Law, US Power has been a number of years in the making and has benefited from two periods of research leave from the University of New South Wales and visits to Temple University and the College of Wooster, as well as the presentation of seminars at Macquarie University, the University of Newcastle (Australia), and the National University of Singapore. I would like to thank Jeffrey Dunoff for hosting my period of research at the Beasley School of Law, Temple University, and Jeffrey Lantis for hosting my visit to the College of Wooster. Jeffrey McGee kindly invited me to present a research seminar on this material at the University of Newcastle. I would also like to express my gratitude to Henry Burmester, Hugh Kindred, Jeffrey McGee, RadhikaWithana, Shen Yi, and the anonymous referees for their comments on various portions of the draft and to John Langmore for volunteering to read and comment on the whole manuscript. Their input was of great assistance as I endeavoured to refine my argument, although I remain responsible for any errors or omissions. In conclusion I would like to express my warm thanks to Orli Zahava, Radhika Withana, and Melissa Hanks for their research assistance. Radhika Withana assisted with the early period of US history and Orli Zahava with the more recent years. Orli also researched and created the tables in the appendix. Melissa Hanks helped finalize the manuscript. To all those who have assisted, I am appreciative not only of your professional insights and technical assistance, but for your broader support for bringing to completion what has at times felt like a lengthy project.