[A] "If a law governs a particular space-time region then the physical states will so evolve." (Maudlin, 17)[B] "My analysis of laws is no analysis at all. Rather I suggest we accept laws as fundamental entities in our ontology." (Maudlin, 18)
[C] "The laws can operate to produce the rest of the Mosaic exactly because their existence does not ontologically depend on the Mosaic." (Maudlin, 175; emphases in original)
[D] "The universe, as well as all the smaller parts of it, is made: it is an ongoing enterprise, generated from a beginning and guided towards its future by physical law." (Maudlin, 182; emphasis in original)
Maudlin's book is fantastic. It gives you a sense of what metaphysics looks like if one has an advanced education in recent physics; it is also rooted in "scientific practice." With laser like precision it focuses on the most fundamental weaknesses of the most important alternative approaches (Quine, Lewis, Van Fraassen, etc), and it makes obscure physics seem easy to digest. What would stop somebody sympathetic to Maudlin's general orientation from accepting laws in one's ontology [B]?
Maudlin calls the fundamental laws "FLOTEs" (for Fundamental Laws of Temporal Evoluton). Together with "adjunct principles," FLOTEs describe how states (may) evolve into later states. (17) Initial conditions are examples of such principles. One can certainly understand physics such that its business is mainly discovering FLOTEs. So far so good. But [A, C, D] describe the laws themselves as the productive sources of change. If Maudlin were writing in the seventeenth century we would describe his position about laws either as "second causes" (Cartesian language) or as a special modern instance of "formal causation" (in the way that platonizing mathematicians thought of these [see Mancosu's book])--inspired by Kuhn (and anticipated by Burtt), I think such formal causes were conceptually transformed into laws of nature by Bacon and Newton.