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Documentation Index

Fetch the complete documentation index at: https://vaquill.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

Statutes & Regulations is a unified search across federal and state law. Pull up any USC section, CFR provision, or state statute and see its full text, every amendment in its history, and how courts have interpreted it - including how interpretations shifted before and after key amendments.

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Coverage

United States Code

Federal statutory law across all titles, with subsection-level navigation and amendment history.

Code of Federal Regulations

Federal regulations across all titles, cross-referenced to the authorizing statute and implementing agency guidance.

State Statutes (all 50)

Statutory codes for every state, with consistent search and amendment timelines.

State Constitutions

Full text of all 50 state constitutions with article-level navigation.

US Constitution

Articles and amendments with historical context and interpretive case law.

Court Interpretations

For every section: the leading cases that have construed it, ranked by directness of interpretation.
Search by citation, by keyword, or in natural language (“What does federal law say about overtime exemptions for salaried employees?”).

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What You See on a Section Page

For any statute or regulation, the section page shows:
  • The current text of the section, with subsections expandable
  • The amendment timeline - every revision the section has gone through, with effective dates
  • Court Interpretations - the leading cases that have construed this section
  • A Before / After split when the section has been amended substantively, showing how courts read the old version vs. the new
  • Cross-references to related sections in the same title and implementing regulations

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Amendment Timeline

Every change to a statute is logged with:
  • The effective date of the amendment
  • A plain-English summary of what changed
  • A diff view showing exactly which words were added, removed, or substituted
  • The public law number or session law citation
  • Whether the change was a substitution, insertion, omission, or technical correction
Use this to answer questions like “What did this section look like in 2018 when my client signed the contract?” or “When did Congress add the safe harbor?”

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Court Interpretations

For each section, the tool surfaces the leading cases that have construed it:
  • Cases are ranked by how directly they interpret the section, not just cite it
  • Each case shows a one-line holding tied to the specific subsection
  • Click through to the full opinion in the case law corpus
  • Filter by court (Supreme Court, Circuit, District, State Supreme, State Appellate)
  • Filter by year to see only recent interpretations

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Before / After Amendment Split

When a section has been amended in a way that changed its substance, the page splits the case law into two columns:
  • Before - Cases that interpreted the prior text
  • After - Cases applying the current text
This is critical for matters that span an amendment date. The tool flags cases that may no longer be good law because the statutory text they construed has been replaced.
When a statute is amended substantively, pre-amendment case law may still control conduct that occurred before the effective date. Always confirm which version of the statute governs the facts of your matter before relying on an interpretation.

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Search Modes

ModeBest For
Citation lookupYou have the cite (e.g., “29 USC 207”, “12 CFR 226.5”, “Cal. Civ. Code 1798.100”)
Keyword searchYou want every section that mentions a term
Natural languageYou have a question and want the AI to surface the relevant sections
Topic browseYou want to scan a title or chapter end-to-end

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State Coverage

For each state, you get the same depth as federal:
  • Full statutory code with amendment history
  • State constitution with article-level navigation
  • State court interpretations of each section
  • Cross-references between state statutes and federal counterparts where applicable

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Tips

Pin to a matter. Add a section to a matter so it stays one click away while you draft - useful when a brief turns on a specific statutory phrase.
Cite-check your brief. Drop a section cite into a brief and the tool verifies the section exists, is in force, and flags any recent amendments before you file.
Watch the timeline. When a section changes, any case interpreting the old version may need re-evaluation - the Before / After split surfaces this automatically.

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Find the right USC sections

Statute Finder - locate every USC and CFR section that governs a fact pattern, with leading interpretive cases.

Case Law Research

Search the full case law corpus.

Citation Graph

See how interpretive cases have been treated since.

Document Search

Ask questions across your own uploaded documents.

Deep Research

Multi-hop analysis when one section interacts with several others.