Are there metaphysical laws?

As part of his constructor theory David Deutsch believes that "All laws of physics are expressible in terms of statements about which physical transformations are possible and which are impossible." Einstein, Bohr, and Heisenberg argued about what kind of physical laws were acceptable. The assertion that "everything has a cause" might be one candidate metaphysical law, a metaphysical law that quantum mechanics might cause us to reject. In Science Without Laws (Duke University Press, 2007) Creager, et al, consider the possibility that knowledge might be organized around exemplars or cases rather than around fundamental laws. Similarly, there might then be no metaphysical laws either.