The 287(g) Wave — Who Signed Up

The wave, month by month

The program's own dates tell the story. From 2019 through 2024 the file accumulates 129 agreements. In 2025 alone it adds 1,100; 2026 has added 894 more through 2026-07-10. The earliest task-force agreement in the file is dated 2025-01-30 — every one of the 1,417 street-level enforcement agreements postdates it.

Agreements signed per month since January 2025, from the SIGNED column of ICE's own file. The pre-2025 base (129 agreements, 2019–2020) is summarized rather than charted, to keep this view on the 2025–2026 surge.

Three models, one signature

An agency signs one memorandum per model, and 319 of the 2,123 agreements are second or third models held by the same agency. The jail models operate inside custody; the task-force model deputizes officers on the street.

Signers by government type: 1,204 county agencies, 839 municipal, 80 state-level.

Where the signatures are

Zero is data here. Twelve states record no signed agreement at all — the four Pacific states (California, Oregon, Washington, Hawaii), a seven-state Northeast cluster (New Jersey, Connecticut, Rhode Island, Vermont, Maine, Maryland, Delaware), and Illinois — while Texas alone holds 463 agreements. The file records the zeros without comment; several of those states bar their agencies from signing by statute.

Top 15 states

All 38 states, Guam and Northern Mariana Islands, and every agreement row ship in the keyless JSON.

The file, as ICE keeps it

The authoritative federal register of local immigration-enforcement power is a spreadsheet with literal error strings in its county column. This dataset preserves every defect and publishes every correction rather than silently fixing them:

• 235 rows carry a literal spreadsheet error string (#N/A, #NA, N/A) where the county should be — counted here as “no county recorded in ICE's file,” never guessed.
• 41 rows needed a verified county correction — misspellings (“Pulaksi,” “Flager,” “Kenawha”), an invented Louisiana parish, a Virginia independent city recorded as a county. Each correction was checked against the agency named on the row and is listed in the defect ledger.
• 4 county values are unresolvable without guessing — including a “Washington County” in West Virginia, which has none — and are kept exactly as recorded, with the reason published.
• One state is misspelled (“NEW HAMSPHIRE”), one signing date reads 6/30/20026, and 217 memorandum links arrived wrapped in Outlook email-security redirects — unwrapped here to their bare ice.gov targets.
• A dated observation (2026-07-10): ICE's program page claimed 34 warrant-service states and 39 states overall; the file it links to supports 33 and 38. Stated as a file-versus-page discrepancy only.

Method & caveats

• Source: ICE's 287(g) participating-agencies file (ice.gov), a US government work in the public domain. The file updates near-daily; this build reflects the participating-agencies file, workbook last modified 2026-07-10.
• One record per signed agreement (agency × model). Agencies holding multiple models appear once per model, so agreements (2,123) exceed distinct agencies (1,804).
• County FIPS codes join the Census county-equivalents gazetteer on (state, normalized county): 1,884 of 2,123 rows resolve; 235 record no county; 4 are kept as recorded with a published reason.
• Regenerate: python3 scripts/build_287g.py. Every gate fails closed — an unknown column, state, model, or county value stops the build until a human reviews it.
• The dataset records who signed what, when — it does not measure enforcement activity conducted under any agreement.

Machine access

The full dataset — metadata, defect ledger, state and monthly aggregates, and all 2,123 agreement records — is one keyless fetch:

import requests
d = requests.get("https://ai-analytics.org/287g/index.json").json()
tfm = [a for a in d["agreements"] if a["model"] == "TFM"]
print(len(tfm), "task-force agreements;", d["meta"]["byYearSigned"])

Also listed in the Voidly datasets manifest and /data. License: public domain source; this compilation CC0.