The library
Every source Passim holds, with what it covers, how often it is refreshed, and where the official copy lives. Follow the reader links below to browse the released collections, free and without a login.
1,086,064decisions in the corpus
120+official sources
September 19, 2026count snapshot
Showing saved counts from the date above.
Decisions
Your AI searches the case library. The public reader opens the released collections below, with reading text where available and original PDFs for decisions awaiting a reading edition.
Board of Immigration Appeals and Attorney General precedentsPublished decisions in Immigration and Nationality Decisions, volumes 1 through 30, including the Attorney General’s decisions.Volumes 1 to 30, 1940 to the current volumeDaily3,330decisionsUpdated Sept. 19, 2026Browse decisions →
Unpublished BIA decisionsNon-precedent decisions released through EOIR’s FOIA reading room. Every answer labels them non-precedential and links the decision PDF.2017 to the present, as EOIR has released themAs EOIR releases them258,228decisionsUpdated Sept. 19, 2026Browse decisions →
Administrative Appeals Office decisionsNon-precedent decisions on appeals from USCIS petitions and applications, by form type.2005 to the presentDaily168,323decisionsUpdated Sept. 18, 2026Browse decisions →
Federal circuit court opinionsImmigration opinions of the courts of appeals, published and unpublished.1920s to the presentDaily117,538opinionsUpdated Sept. 19, 2026Browse opinions →
Federal district court decisionsImmigration litigation in the district courts: habeas, mandamus, naturalization delay, and Administrative Procedure Act cases.Historical and current decisionsWeekly57,652decisionsUpdated Sept. 19, 2026Browse decisions →
U.S. Supreme Court opinionsImmigration and related decisions, with the syllabus, majority, concurrences, and dissents separated where the source supports it.1830s to the presentAs decided2,841opinionsUpdated Sept. 16, 2026Browse opinions →
OCAHO and BALCA decisionsEmployer-sanctions and document-fraud cases from the Office of the Chief Administrative Hearing Officer, and labor-certification appeals from the Board of Alien Labor Certification Appeals.BALCA from 1987, and OCAHO’s published decisionsDaily8,100decisionsUpdated Sept. 19, 2026In the reader soon
Immigration judge decisionsIndividual decisions reviewed one at a time for public release, with the basis for release recorded.Reviewed setAs reviewed135decisionsUpdated Sept. 1, 2026Read decisions →
State court decisions on criminal statutesOpinions from the state courts in our collection that interpret criminal provisions relevant to immigration research.Selected state courtsIn batches, by state469,900opinionsUpdated Sept. 19, 2026Through your assistant
Statutes and regulations
Resolved to the exact section or subsection your AI asks for, with the official text.
Immigration and Nationality Act and Title 8INA sections with their U.S. Code parallels and the statutory notes.Title 8 and statutory notesChecked daily1,264provisionsUpdated July 11, 2026Find provisions →
Immigration regulationsThe immigration parts of C.F.R. titles 6, 8, 19, 20, 21, 22, 28, 29, 42, and 45.Immigration-related titles and partsDaily4,081provisionsUpdated Sept. 18, 2026Find provisions →
ConstitutionThe provisions immigration cases turn on.Full textStatic88provisionsUpdated Apr. 3, 2026Read provisions →
State and federal criminal codesThe penal codes of 48 states with full text, four more as directories where the publisher restricts the text, and Title 18 with the Title 21 drug schedules.State penal codes and federal criminal provisionsIn batches49,353provisionsUpdated June 23, 2026Find provisions →
Agency guidance and reference
Manuals, memoranda, forms, reports, and treaties, kept in sections so a citation lands on the right one.
USCIS Policy ManualEvery volume, part, and chapter, with memoranda tracked for whether they are still current against it.Volumes, parts, and chaptersDaily618sectionsUpdated Sept. 18, 2026Browse manual →
USCIS policy memoranda, alerts, and web guidancePolicy memoranda, news and alerts, and standing web guidance, each reviewed for whether it remains in force.Memoranda, alerts, and web guidanceDaily239documentsUpdated Sept. 7, 2026Browse references →
USCIS forms, fee schedule, and poverty guidelinesCurrent form editions and instructions, the G-1055 fee schedule, and the I-864P guidelines.Forms, instructions, fees, and guidelinesDaily436documentsUpdated Sept. 9, 2026Browse references →
Temporary Protected Status designationsThe designation posture for every country, checked against the USCIS page.Country designationsDaily27countriesUpdated Sept. 3, 2026Through your assistant
Foreign Affairs ManualThe consular volumes and their appendices.Consular volumes and appendicesDaily778sectionsUpdated Aug. 28, 2026Browse manual →
EOIR practice manuals, policy memoranda, and formsThe BIA Practice Manual, the Immigration Court Practice Manual, EOIR policy memoranda, and EOIR forms.Practice manuals, memoranda, and formsDaily383documentsUpdated Sept. 19, 2026Browse references →
Other agency manuals and guidanceICE guidance and detention standards, SEVP guidance, CBP guidance, Labor Department foreign labor certification, ORR policy guides, the Justice Manual’s immigration litigation chapter, the E-Verify and Form I-9 handbooks, the naturalization guide, asylum officer training materials, and the retired Adjudicator’s Field Manual.As publishedDaily1,376sectionsUpdated Sept. 18, 2026Browse references →
Country conditionsState Department Country Reports on Human Rights Practices, International Religious Freedom Reports, and Trafficking in Persons Reports, by country and year.By country, report series, and yearEach annual release12,937reportsUpdated Aug. 12, 2025Browse countries →
Oversight and research reportsGAO reports, Congressional Research Service reports, and DHS Inspector General reports on immigration.Published immigration reportsAs published2,551reportsUpdated Sept. 17, 2026Browse references →
INA legislative historyCommittee reports and statutory history for the Act.Through 2007Static899sectionsUpdated Sept. 14, 2026Browse history →
Treaties and international guidanceThe 1951 Refugee Convention and 1967 Protocol, the Convention Against Torture, and the UNHCR Handbook and Guidelines.Full textStatic5documentsUpdated Apr. 1, 2019Browse references →
Visa Bulletin
Priority dates for every category and chargeability, month by month.
Visa BulletinEvery monthly bulletin with its priority-date tables, and the chart USCIS designated for filing each month since October 2015.Monthly priority-date tables since December 2001Monthly, when the Department of State posts it15,858entriesUpdated Aug. 24, 2026Through your assistant
Counts refresh automatically when you open this page. They describe the full corpus; the public reader can contain fewer records. “Updated” is the recorded source or collection update date, not the date of the count snapshot. Coverage is not uniform across sources and years. A count is a count of records, not a certification that every record is complete, and the official copy is always the one to cite.
The citator
Before your AI cites a case, Passim tells it what has happened to that case since it was decided: the later decisions that affirmed, limited, vacated, overruled, or reinstated it, quoted from the citing decision. Treatment is recorded for the precedents of the Board, the Attorney General, the circuit courts, and the Supreme Court, from 151,564 citation links between decisions. Every status your AI shows comes from this list.
- CautionAdverse treatment is on record. Read it before relying on the case.
- NegativeA later authority limits, criticizes, or declines to follow it.
- Overruled / vacatedA later authority ended it, in whole or on a specific holding.
- ReinstatedA later authority restored it, as happened with Matter of A-B- in 2025.
- Treatment availableThere is history to read.
- UncheckedNo treatment has been recorded yet.
A status is a starting point rather than a substitute for reading the decision, and the absence of a warning doesn’t establish that a case is good law. Where a case has been treated differently on different holdings, the answer says which holding the treatment reaches.
How the library is kept
Source feeds refresh on the schedules listed above. We also review and repair text and metadata against preserved source documents. Earlier revisions and original sources are retained so corrections can be checked. The public reader offers reading text where available and original PDFs for decisions still awaiting a reading edition.