There are East-Coast Straussians and there are West-Coast Straussians.
Reduced to a single mouthful, East-Coasters can be said to believe that liberal modernity is a bad thing for politics and ethics. Since the American political experiment was born out of the Enlightenment, it unavoidably shares in modernity’s defects—among which are a dismissal of religious and ethical restraints and a depressing weakness for the tyranny of the majority.
West-Coasters agree that liberal modernity, as so defined, has had some lamentable consequences; but they understand the American experiment as an effort to recur to the first principles of classical politics (and particularly to Aristotle), and that recurrence renders American political history as the tale of a struggle between a righteous classicism and a lethal relativism.
(Of the two, we may take Allan Bloom as emblematic of the East-Coasters, and Harry Jaffa of the West-Coasters).
Between these upper and nether millstones, there is also a Midwestern Straussianism, which agrees that modernity is toxic (in the worst Hobbesian or Nietzschean sense of the word) and that the American experiment is indeed a modern one, but an experiment whose instincts struggle to tame the worst features of political modernity. And Michael P. Zuckert, the author of A Nation So Conceived: Abraham Lincoln and the Paradox of Democratic Sovereignty, is one of its prophets.