The National Constitutional Center in Philadelphia is dedicated to "increasing public understanding of, and appreciation for, the Constitution, its history, and its contemporary relevance." So naturally, it has named Bill Clinton its next chairman. In "Dereliction of Duty: The Constitutional Record of President Clinton," the Cato Institute examined Mr. Clinton's record: Though he "has expressed support for an 'expansive' view of the Constitution and the Bill of Rights, he has actually weakened a number of fundamental guarantees, including those of free speech and the right to trial by jury and that against double jeopardy. He has also supported retroactive taxes,...