In the Pentagon Papers case, the government asserted in the Supreme Court that the publication of the material was a threat to national security. It turned out it was not a threat to U.S. security. But even if it had been, that doesn't mean that it couldn't be published.

Simpson Case (1996); the best-selling The Case for Israel (2003); Rights From Wrongs: A Secular Theory of the Origins of Rights (2004) and The Case for Peace (2005). He has spent most of his career at Harvard Law School where in 1967 at the age of 28 he became the youngest full professor of law in its history.