SAN DIEGO, Calif. — Everytown for Gun Safety Support Fund submitted this amicus brief in the United States District Court for the Southern District of California in support of California’s law prohibiting, with a number of exceptions, those licensed to sell firearms from selling or transferring firearms to persons under 21 years of age. Everytown’s brief details the long history of such age-based restrictions, which have existed for more than 150 years and have consistently been found by courts and legal scholars to be constitutional under the Second Amendment. Given this historical record, Everytown’s brief demonstrates that California’s law does not infringe upon a right protected by the Second Amendment. The brief also explains a further ground for the statute’s constitutionality: the substantial relationship and reasonable fit between California’s law and the State’s undeniably important interest in promoting public safety and reducing gun violence. Everytown’s motion for leave to file this amicus brief was denied by the court on January 14, 2020.