The Prison Rape Elimination Act of 2003 (PREA; Public Law 108-79) requires the Bureau of Justice Statistics (BJS) to carry out a comprehensive statistical review and analysis of the incidence and effects of prison rape for each calendar year. [1]

PREA has clearly changed policies, training, and reporting practices since 2012, but the evidence that it has actually reduced sexual victimization is mixed and, for ICE/immigration detention, largely indicates little or no measurable decline in incidents, especially post‑2014/2017.[1][2][3][4]

Overall corrections system (prisons and jails)

For state and federal prisons and local jails, the best quantitative window is the BJS National Prison Rape Statistics Program, which PREA required. Key points:[1]

• BJS surveys of inmates show that self‑reported sexual victimization rates in adult prisons and jails remained in the low single digits (roughly 3–4% in prisons and 3% in jails in early 2010s surveys), with no clear, dramatic post‑2012 collapse attributable solely to PREA.[3][1]
• BJS administrative data show that the number of substantiated sexual victimization incidents in local and private jails more than doubled from 284 in 2011 to 576 in 2015 (up 103%), while substantiated incidents in federal prisons rose from 605 to 873 over the same period.[3]
• Experts note that increases in “substantiated incidents” likely reflect a mix of better detection, classification, and investigation—as PREA pushed facilities to track and substantiate cases—rather than a pure increase in underlying assaults.[5][3]

So, post‑2012, PREA correlates with more structured reporting, audits, and investigations, but not with a clear, system‑wide decline in sexual abuse rates; some measures actually rise because the system is finally counting what it previously missed.[5][1][3]

Immigration detention and ICE

For ICE, the empirical story post‑PREA is even less encouraging in terms of actual reductions.[2][4]

• Freedom for Immigrants reports that DHS’s Office of Inspector General received at least 1,016 reports of sexual abuse from people in DHS detention between May 2014 and July 2016—an average of about one complaint every day and a half—during the period when DHS PREA standards were already in effect.[4]
• A 2023 JAMA Health Forum study examining sexual assault allegations in ICE detention from 2018–2022 (after ICE’s 2017 PREA adoption) found that overall allegation trends were “stable” across those years, but allegations involving staff perpetrators increased.[2]
• Advocacy groups point to continued patterns of abuse and call for a second National Prison Rape Elimination Commission specifically to investigate PREA effectiveness and violations in CBP and ICE facilities, arguing that the current regime has not achieved its goal of meaningfully reducing abuse.[4]

In short, PREA and DHS/ICE standards have not produced a demonstrable drop in ICE sexual assault allegations; if anything, the data show persistent levels of abuse and rising staff‑related allegations in the post‑PREA policy environment.[2][4]

Implementation and compliance limits

A large part of the “effectiveness” problem is implementation rather than the formal content of the standards.[6][7][5]

• Commentaries on PREA’s first five years emphasize that the standards have led to widespread creation of PREA coordinators, staff training, audits, and improvements in some facilities, but stress that audits are often weak, under‑funded, and inconsistent.[5]
• Analyses of PREA’s “limits of liberal reform” argue that, because enforcement is tied to audits and modest funding penalties and because prisons can treat consensual sex as “sexual abuse,” PREA can distort data and still fail to protect prisoners from coercive and retaliatory abuse.[7]
• Recent writing on federal funding notes that cuts and failures in PREA implementation—especially by the federal Bureau of Prisons—coexist with “high rates of sexual abuse,” suggesting that the law has not been fully realized on the ground.[6]

For ICE specifically, the hybrid system of federal facilities, private prisons, and local jails under contract, plus the civil (non‑criminal) framing of immigration detention, creates enforcement gaps that make PREA less able to drive uniform practice change.[4][2]