In this paper, written for a volume on the work of Robert Alexy, I discuss the idea that law makes certain distinctive claims, an idea familiar from the work of both Alexy and Joseph Raz. I begin by refuting some criticisms by Ronald Dworkin of the very idea of law as a claim-maker. I then discuss whether, as Alexy and Raz agree, law's claim is a moral one. Having arrived at an affirmative verdict, I discuss the content of law's moral (...) claim. Is it, as Alexy says, a claim to moral correctness? Or is it, as Raz says, a claim to moral authority? (shrink)