Keeping Guns from High-Risk Individuals Act This bill expands the categories of persons who are prohibited from shipping, transporting, receiving, or possessing firearms or ammunition. Specifically, it adds the following new categories of prohibited persons: persons convicted of a crime of violence in the most recent 10-year period; persons under age 25 who have been adjudicated as having committed an offense that would have been a crime of violence if committed by an adult; persons convicted, during a consecutive 3-year period in the most recent 10-year period, of two separate offenses involving drug or alcohol possession or distribution; and persons convicted of stalking.