Federalism Conflicts on the Constitutionality of Laws in Mexico (01.01.1995-21.06.2021)

This dataset Federalism Conflicts on the Constitutionality of Laws in Mexico during a selected period. The dataset covers judgments issued on "constitutional controversies," a procedure through which the Mexican Supreme Court resolves federalism conflicts. The dataset provides information pertaining to cases filed and resolved, including the plaintiff, the defendant, and the type of normative provision challenged. It also provides an overview of the outcomes of all normative provisions challenged (upheld, invalidated, dismissed out of procedural grounds, or dismissed out of the lack of a supermajority vote to invalidate them). Data was downloaded on June 22, 2022, and manually classified in the following months. The dataset may be employed to calculate unconstitutionality rates or to study the impact of supermajority rules on the role of constitutional courts as arbiters of federalism conflicts.