Private prisons create financial incentives that drive mass incarceration

The claim

Private prisons are not merely a service-delivery mechanism — they are a political actor with a direct financial stake in the size and duration of the incarcerated population. The claim holds that CoreCivic (formerly the Corrections Corporation of America, or CCA) and GEO Group, the two dominant private prison operators, have systematically used their revenues to lobby legislators, fund model sentencing legislation through the American Legislative Exchange Council (ALEC), and write contractual minimum-occupancy guarantees that impose a financial cost on states when incarceration rates fall. The result is a structural incentive misalignment: the industry profits when more people are imprisoned for longer, and it has spent decades converting that profit into political influence to ensure exactly that outcome.

The mechanism

The mechanism proposed by the claim is straightforward: private prison firms receive per-diem payments per incarcerated person, so revenue scales directly with headcount. This creates a profit motive to (a) secure contracts with occupancy guarantees that lock in minimum populations, (b) lobby against policies — sentencing reform, diversion programs, early release — that would reduce the inmate census, and (c) fund politicians and model legislation that expand the pool of incarcerable offenses or increase mandatory minimum terms.

The mechanism breaks down in one important respect: private prisons hold only about 8 percent of the US prison population. They did not create mass incarceration; the US incarceration rate began its steep climb in the early 1980s, before private prisons existed at scale. The structural claim is therefore not that private prisons caused mass incarceration, but that the industry emerged to profit from it and then used that profit to entrench and extend it. The two phenomena are co-constitutive rather than simply causal in one direction.

The mechanism is cleaner in immigration detention, where GEO Group and CoreCivic hold a much larger share of the market. ICE detention contracts are heavily privatized, giving the industry a direct financial interest in aggressive immigration enforcement — a dynamic that became conspicuous as both firms expanded capacity in anticipation of enforcement surges.

The evidence

Lobbying expenditures and campaign contributions

Justice Policy Institute documented in its 2011 report Gaming the System that CCA, GEO Group, and the Management and Training Corporation spent a combined $45 million on lobbying and campaign contributions over the preceding decade. CoreCivic and GEO Group together spent approximately $25 million on federal lobbying alone from 2000 to 2019, according to OpenSecrets. GEO Group gave $225,000 to a Super PAC supporting Donald Trump in 2016 — a violation of federal contracting rules that barred federal contractors from making such donations — and was subsequently awarded hundreds of millions in new ICE detention contracts.

ALEC and model legislation

The American Legislative Exchange Council served as the primary vehicle through which private prison companies converted lobbying dollars into enacted law. CCA was a founding member of ALEC’s Criminal Justice Task Force, which drafted and disseminated model three-strikes legislation, mandatory minimum sentencing bills, and truth-in-sentencing statutes throughout the 1990s and 2000s. Investigators at the National Conference of State Legislatures and subsequent academic researchers documented that ALEC-affiliated bills tracked CCA’s capacity expansion timeline: as CCA built new facilities, ALEC-model sentencing legislation flowed through state legislatures to fill them. CCA resigned from ALEC in 2010 following public pressure, but the legislative legacy — mandatory minimums, truth-in-sentencing, reduced parole — remained on the books.

Minimum-occupancy contracts

A 2013 analysis by the watchdog group In the Public Interest reviewed private prison contracts in 62 facilities across 27 states and found that 65 percent contained occupancy guarantees, typically requiring states to maintain between 80 and 90 percent capacity or pay the contractor for the unused beds. Arizona’s contracts with CCA required 97 percent occupancy. These provisions are not incidental: they impose a direct financial penalty on any state that successfully reduces its prison population, functioning as a structural subsidy for incarceration regardless of crime trends.

The 2016 DOJ phase-out and 2017 reversal

In August 2016, the Obama Justice Department’s Office of the Inspector General published a report finding that private prisons performed worse than federal facilities on nearly every metric — including safety, programming, and contraband. The Deputy Attorney General ordered BOP to phase out private federal prison contracts. CoreCivic’s stock fell 35 percent on the day of the announcement. In February 2017, then-Attorney General Jeff Sessions rescinded the memo in a one-paragraph directive. CoreCivic and GEO Group had together donated approximately $500,000 to Trump’s inaugural committee. The policy reversal, its speed, and its direct correlation with industry financial interests constitutes one of the clearest observable instances of the mechanism the claim describes.

Recidivism and program quality

Mukherjee (2016) used a quasi-experimental design — exploiting random assignment of inmates to facilities as a function of capacity — to compare recidivism outcomes for inmates housed in private versus public facilities in Mississippi. Inmates released from private facilities had recidivism rates approximately 4 percentage points higher than those released from comparable public facilities, a finding the study attributed in part to lower spending on vocational, educational, and rehabilitation programming. Private prisons spend less per inmate on programming because programming does not generate revenue and reduces the cost of incarceration only to the state, not to the contractor. This misalignment means the industry’s profit motive works against rehabilitation — the outcome that would most durably reduce incarceration.

Cross-national comparison

Norway incarcerates 44 people per 100,000; Germany 72; the Netherlands 59; Denmark 63; Sweden 57. The United States incarcerates 531 per 100,000 — roughly eight to twelve times the rate of comparable wealthy democracies. None of these peer nations operate a for-profit private prison sector at meaningful scale. The US–peer gap is not explained by crime rates: the US violent crime rate is higher than European averages, but not by a factor of eight. The gap is explained by sentencing policy — mandatory minimums, truth-in-sentencing, prosecutorial charging practices — that is, precisely the policy domain in which private prison lobbying has been most active.

Who benefits

CoreCivic and GEO Group are the primary beneficiaries, generating combined annual revenues exceeding $4 billion. Their institutional shareholders — index funds and private equity vehicles — benefit from revenue stability underwritten by occupancy guarantees. Politicians who receive campaign contributions from the industry benefit from the funding. County sheriffs who contract with ICE for detention beds and receive a per-diem fee have a personal budget incentive to maintain high detention populations. Bail bond companies, private probation operators, and prison telephone companies form a broader ecosystem of for-profit actors whose revenues depend on maintaining a large criminal justice population, and who lobby alongside the prison industry against decarceration reforms.

The libertarian Cato Institute and the Koch-funded Americans for Prosperity have both opposed private prisons on grounds of crony capitalism — a notable instance where the structural critique of private prison lobbying has cross-ideological support.

The counter

The steelman for private prison defenders has two components. First, private prisons did not invent mass incarceration: the US incarceration rate rose sevenfold between 1972 and 2008 driven primarily by the War on Drugs, mandatory minimum legislation, and prosecutorial incentives that existed entirely within the public sector. CCA was founded in 1983, after the curve had already begun its upward arc. Private prisons are largely a downstream product of a political choice to incarcerate at scale, not its origin.

Second, the share of the prison population in private facilities has remained relatively small — around 8 percent of state and federal prisoners — which limits the industry’s direct leverage over overall incarceration rates even if its lobbying is real. Some economists have argued that in underfunded state correctional systems, private operators provide lower-cost bed space that allows states to manage population growth without building new public infrastructure, and that the counterfactual is not decarceration but more expensive public incarceration.

The evidence on cost savings is genuinely contested: a 2010 Temple University meta-analysis (Lundahl et al.) found that private prisons offered minimal or no consistent cost advantage once quality-adjusted. Some state audits have found savings; others have not. The claim about lobbying and incentive misalignment is well-documented; the claim that private prisons are a primary driver of overall incarceration rates is harder to sustain given their market share.

References

Mukherjee, A. (2016). Privatization and the decline of the state: Evidence from the U.S. prison industry. SSRN Working Paper. https://doi.org/10.2139/ssrn.2523238

Justice Policy Institute. (2011). Gaming the system: How the political strategies of private prison companies promote ineffective incarceration policies. Justice Policy Institute. https://justicepolicy.org/research/gaming-the-system/

In the Public Interest. (2013). Criminal: How lockup quotas and ’low-crime taxes’ hurt communities. In the Public Interest. https://www.inthepublicinterest.org/criminal-how-lockup-quotas-and-low-crime-taxes-hurt-communities/

Lundahl, B. W., Kunz, C., Brownell, C., Harris, N., & Van Fleet, R. (2010). Prison privatization: A meta-analysis of cost and quality of confinement indicators. Research on Social Work Practice, 19(4), 383–394. https://doi.org/10.1177/1049731509347887

Hartney, C., & Glesmann, C. (2012). Prison bed profiteers: How corporations are reshaping criminal justice in the US. National Council on Crime and Delinquency.

Carson, E. A. (2023). Prisoners in 2022 — statistical tables (NCJ 307149). Bureau of Justice Statistics, U.S. Department of Justice. https://bjs.ojp.gov/content/pub/pdf/p22st.pdf

Walmsley, R. (2023). World prison population list (14th ed.). Institute for Crime and Justice Policy Research, Birkbeck, University of London. https://www.prisonstudies.org/research-publications

Gaes, G. G. (2019). The current status of prison privatization research on American prisons and jails. Criminology & Public Policy, 18(2), 269–293. https://doi.org/10.1111/1745-9133.12432

Shapiro, D. (2011). Banking on bondage: Private prisons and mass incarceration. American Civil Liberties Union. https://www.aclu.org/report/banking-bondage-private-prisons-and-mass-incarceration

U.S. Department of Justice, Office of the Inspector General. (2016). Review of the Federal Bureau of Prisons’ monitoring of contract prisons. OIG Evaluation and Inspections Division. https://oig.justice.gov/reports/2016/e1606.pdf