However, the 1980s ushered in a new era of prison privatization. With a burgeoning prison population resulting from the War on Drugs and increased use of incarceration, prison overcrowding and rising costs became increasingly problematic for local, state, and federal governments. In response to this expanding criminal justice system, private business interests saw an opportunity for expansion, and consequently, private-sector involvement in prisons moved from the simple contracting of services to contracting for the complete management and operation of entire prisons.[20]