This article addresses three topics. First, it refers to the various investment arbitration cases launched against Mexico on the basis of denial of justice allegations following the Lion Mexico Consolidated LP v United Mexican States award. Second, it analyses the relevance of the PACC Offshore Services Holdings LTD v United Mexican States award in relation to the interpretation of the fair and equitable treatment and judicial expropriation investment protection standards. And third, it comments on a recent precedent from the Mexican Supreme Court on the annulment of arbitral awards, which confirms Mexico as a pro-arbitration forum.