The number of people under correctional supervision in the US has continued to climb despite declines in crime rates. This is due to get-tough-on-crime laws, the War on Drugs, and parole authorities' fear of liability. There are now over 500 incarcerated per 100,000 people. Corrections involves prisons, jails, probation, parole, and alternative sentencing programs. The growing corrections population has led to an expanding workforce of over 750,000 nationwide. Corrections aims to achieve justice through the criminal justice system, which includes the police, courts, and corrections.