The Ari-Son Megaregion Council is a binational council of local elected officials from Arizona and Sonora who work with stakeholders from all levels of government and the business community to increase dialogue and strengthen strategic cross-border economic development efforts. The Megaregion was created by an agreement signed between mayors of Sonora and Arizona in 2014. The objective is to expand local government connections, best practices, provide a forum to elevate the voice of local leadership on binational policy matters, and identify areas for opportunity and collaboration. In August of 2016, the Ari-Son Megaregion Council was formally recognized by the League of Arizona Cities and Towns as an official affiliate group of the organization providing an ongoing forum to advance local binational relations among the cities of Arizona and Sonora.