Subject-matter jurisdiction in class actions in federal court
The law regarding subject-matter jurisdiction (SMJ) for class actions is complex. The table below summarizes how to analyze the basics of SMJ under the normal diversity statute (1332(a)) without supplemental jurisdiction, with supplemental jurisdiction (after Exxon), and under the Class Action Fairness Act (1332(d)). The analyses below assume that the class action asserts a state-law claim rather than a federal cause […]