Long arm statutes that subject defendants to personal jurisdiction in a particular state by doing business there do not violate the Due Process Clause. Decided June 27, 2023 (argued November 8, 2022). Opinion of the Court: Gorsuch (Parts I and III–B) Dissenting: Barrett. Applied: the Fourteenth Amendment → go there Topic: Personal jurisdiction. Mallory v. Norfolk Southern Railway Co., 600 U.S. 122 (2023), was a United States Supreme Court case in which the court held that a Pennsylvania law is consistent with Due Process. That law requires out-of-state companies to agree to appear, for all lawsuits against them, in Pennsylvania courts as a prerequisite to registering for business in the state. Wiki link