In 2010 there were 26 selection criteria for up to 106 points. Environmental criteria represented only 19% of possible points, with social and other secondary criteria accounting for the rest. The secondary criteria, which are intended to generate complementarities with other government programmes and ease the administrative process, accounted for more than 65% of possible points (Garcia Romero, 2012). If the PSAH is to meet its intended objective, substantially greater weight should be given to environmental criteria. In the case of land-use change for infrastructure, when the projects are of federal jurisdiction and require authorisation by SEMARNAT, a precondition of permission being granted is involvement in this mechanism.