The case of McDonald v. Chicago challenged Chicago's ban on handgun ownership. Otis McDonald, a resident of Chicago, believed the ban violated his Second Amendment right to self-defense. The Supreme Court ultimately ruled 5-4 that the Second Amendment right to keep and bear arms is incorporated through the Fourteenth Amendment due process clause, and therefore applies to states and local governments. This overturned Chicago's handgun ban by finding it unconstitutional. The majority opinion affirmed an individual's right of self-defense extends to firearm ownership, though regulations are allowed. Dissenting justices argued the Fourteenth Amendment does not protect this right. The ruling strengthened gun rights and impacted regulations nationwide.