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README.md

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+---
+license: cc0-1.0
+task_categories:
+  - tabular-classification
+  - tabular-regression
+tags:
+  - immigration
+  - border
+  - cbp
+  - foia
+  - deportation-data-project
+  - duckdb
+  - datapond
+pretty_name: CBP Border Enforcement Database (Deportation Data Project FOIA releases)
+size_categories:
+  - 10M<n<100M
+---
+
+# CBP Border Enforcement Database
+
+Individual-level Customs and Border Protection records obtained by the Deportation
+Data Project through FOIA litigation: Border Patrol apprehensions (FY2008-Dec 2025),
+apprehensions with place of birth (FY2000-FY2022), encounters, Office of Field
+Operations inadmissibility events at ports of entry (CY2014-Jan 2026), Title 42
+expulsions and CBP One appointments. 121 release files harmonised into one schema
+per record type; overlapping release windows resolved into a non-overlapping base
+tiling (see `_files`).
+**51,345,742 rows across 8 tables.**
+
+| Table | Description | Row Count | Column Count |
+|---|---|---|---|
+| `apprehensions_origin` | Border Patrol apprehensions with place of birth (country/state/city), one row per apprehension, FY2000 - FY2022 | 16,719,589 | 16 |
+| `inadmissibles` | Office of Field Operations events where a person arriving at a port of entry was deemed inadmissible, one row per event, CY2014 - Jan 2026 | 11,591,432 | 35 |
+| `apprehensions` | Border Patrol apprehensions between ports of entry, one row per person apprehended (FOIA releases covering Oct 2007 - Dec 2025; monthly gaps where CBP has not yet released data) | 7,907,911 | 74 |
+| `encounters` | Border Patrol encounters (apprehensions with prior-encounter history and seizure fields), FY2010 - FY2018 and Oct 2022 - Sep 2024 | 7,164,459 | 38 |
+| `inadmissibles_superseded` | Rows from inadmissibles release files whose windows overlap the base tiling (see _files.superseded_reason); same schema as inadmissibles | 5,634,463 | 41 |
+| `title42_expulsions` | Title 42 expulsions by Border Patrol, one row per expulsion, FY2020 - FY2022 | 1,976,471 | 24 |
+| `cbp_one` | CBP One app appointments at ports of entry, individual-level extract, Jan 12 - Oct 31 2023 | 323,686 | 19 |
+| `cbp_one_monthly` | CBP One monthly appointment counts by port of entry and citizenship (five overlapping FOIA extracts; see source_file) | 27,731 | 19 |
+
+## Query it remotely
+
+```sql
+INSTALL httpfs; LOAD httpfs;
+ATTACH 'https://huggingface.co/datasets/Nason/cbp-database/resolve/main/cbp.duckdb' AS cbp (READ_ONLY);
+
+SELECT EXTRACT(YEAR FROM event_datetime) AS year, citizenship, COUNT(*) AS apprehensions
+FROM cbp.apprehensions WHERE event_datetime >= '2023-01-01'
+GROUP BY 1, 2 ORDER BY 3 DESC LIMIT 20;
+```
+
+Or with the datapond packages: `pip install datapond` / `pak::pak("datapond-db/datapond-r")`.
+
+Build pipeline, header crosswalk, tiling decisions and caveats: https://github.com/ian-nason/cbp-database
+Source: https://deportationdata.org/data/cbp.html (CC0).