Recently, a canonical change of field variables was proposed that converts the Yang-Mills Lagrangian into an MHV-rules Lagrangian, i.e. one whose tree level Feynman diagram expansion generates CSW rules. We confirm aspects of this proposal by explicitly computing the three, four and five point vertices for general momenta and demonstrating that they do indeed yield Lagrangian vertices proportional to the corresponding MHV amplitude in such a way as to generate the MHV rules. We point out several consequences of this framework, and initiate a study of its implications for MHV rules at the quantum level.