How did Priority Enforcement Program (PEP) differ in implementation from Secure Communities, and why was it replaced?

Checked on January 11, 2026
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Executive summary

The Priority Enforcement Program (PEP) was introduced in late 2014 as a narrower, priority-focused replacement for the Secure Communities (S‑Comm) data-sharing and detainer system, swapping broad automatic detainer practices for new notification forms and enforcement priorities intended to target serious criminals [1] [2]. Critics argued the change was largely cosmetic because the same fingerprint-sharing and information flows remained, while supporters framed PEP as restoring local discretion and addressing constitutional and community‑trust concerns that had driven backlash against Secure Communities [3] [2].

1. What Secure Communities actually did and why it provoked resistance

Secure Communities matched fingerprints taken at local booking to federal immigration databases and routinely issued ICE detainers asking jails to hold people for up to 48 hours so federal authorities could take custody, a mechanism that many civil‑liberties advocates argued functioned as a broad arrest‑to‑deportation dragnet and led to deportations of people without serious convictions, prompting many jurisdictions to limit cooperation [4] [5] [6].

2. How PEP changed forms, priorities, and the legal framing

PEP replaced the single I‑247 detainer form used under S‑Comm with a suite of new forms — notably I‑247N (notification), I‑247D (detainer for convicted criminals), and I‑247X (for voluntary transfer) — and emphasized DHS enforcement priorities that focused on national‑security threats, recent border crossers, and convicted serious criminals rather than anyone with an immigration record; ICE publicly described this as substituting “requests for notification” for the controversial automatic detainers in most cases [2] [7] [1].

3. Continuities: why many saw PEP as “more of the same”

Despite the form changes and priority language, PEP kept the technical backbone of S‑Comm — fingerprint submission and federal access to booking data — and many immigrant‑rights groups and legal observers warned the program preserved the same mechanisms that funnel local arrests into federal removal processes, calling PEP largely cosmetic and predicting continued distrust between immigrant communities and police [3] [8] [5].

4. Practical implementation differences that mattered on the ground

Practically, PEP narrowed the class of people for whom ICE would routinely seek custody and tightened standards for issuing a detainer (requiring probable cause for removability in some interpretations), and it changed how the 48‑hour hold window was counted and when notification should be provided — details that reduced the number of ICE interior enforcement actions according to critics who saw a drop in arrests after PEP’s rollout, while opponents said that drop endangered public safety [9] [10] [11].

5. Why DHS replaced Secure Communities with PEP

DHS under Secretary Jeh Johnson argued the shift was necessary to respond to legal rulings and widespread local pushback, to restore constitutional limits on detainers, and to repair community policing by decoupling routine local booking from automatic federal custody requests — framing PEP as a balance between public safety and civil‑rights protections [1] [11]. Opponents, including some Congressional Republicans and immigration‑restriction groups, contended the change reflected political priorities and would allow removable criminal aliens to remain at large, and testified that interior enforcement and removals declined under PEP [12] [10].

6. Why PEP was short‑lived and what that reveals about underlying tensions

PEP’s lifespan was curtailed by shifting presidential administrations and political priorities: the program was officially rolled out in 2015 but later archived, and the Trump administration re‑instated Secure Communities via executive order in 2017, illustrating that the debate over local cooperation, civil‑liberties limits, and enforcement scope is fundamentally political and not solvable by technical form changes alone [13] [4] [2]. The competing agendas — public‑safety advocates who favor expansive federal access to local custody versus civil‑liberties and local‑control advocates who demand limits — ensured any administrative fix would remain contested [6] [3].

Conclusion: real change vs. political signaling

PEP represented an attempt to thread a narrow policy needle: it signaled restraint by prioritizing serious criminals and replacing broad detainers with notification requests, but it preserved the data flows and local‑federal interfaces at the heart of S‑Comm, leaving both supporters and detractors able to claim vindication; the program’s replacement or revival under subsequent administrations underscores that the core disputes are legal and political as much as they are technical [1] [3] [13].

Want to dive deeper?
How have court decisions on ICE detainers influenced local cooperation with federal immigration enforcement since 2010?
What measurable effects did PEP have on ICE interior arrests and removals during 2015–2016 compared with Secure Communities years?
How do different states interpret and implement ICE form I‑247N versus I‑247D and I‑247X in practice?