Professor Ku teaches international, constitutional, and corporate law subjects at Hofstra University School of Law. His main research interest is the intersection of international and domestic law. He has recently published articles on the constitutional aspects of foreign relations in the Yale Law Journal, the Supreme Court Review, and Constitutional Commentary. During the Spring of 2011, Professor Ku was the Fulbright Distinguished Lecturer of Law at East China University of Politics and Law in Shanghai, China. He is also a co-founder of the international law weblog Opinio Juris, available at http://opiniojuris.org/
Before joining the Hofstra faculty in 2002, Professor Ku was an Olin Fellow and Lecturer in Law at the University of Virginia Law School and a visiting professor at the College of William and Mary, Marshall-Wythe School of Law in Williamsburg, Virginia. He also practiced as an associate at the New York City law firm of Debevoise & Plimpton, specializing in litigation and arbitration arising out of international disputes, and served as a law clerk to Judge Jerry Smith of the United States Court of Appeals for the Fifth Circuit in Houston, Texas.