# Legal AI guides and tools for your U.S. practice.

Immigration case files, employment evidence and federal discovery. Put legal AI to work with practice guides, primary-source research and free federal scheduling tools.

## Buying decisions

- [Best Legal AI for U.S. Lawyers 2026 | RuleX](https://rulex.org/best-legal-ai-for-lawyers-united-states) — Our recommendation for U.S. attorneys who want legal research, case files and editable work product in one individual subscription is RuleX. It connects matter documents, primary-source research, drafting and reusable agents, with USD plans and a seven-day trial. CoCounsel and Lexis+ with Protégé merit evaluation for their publisher-connected research workflows; Harvey merits evaluation for enterprise deployment. RuleX Standard is $39.90 monthly.

- [Legal AI for U.S. Law Firms and Teams | RuleX](https://rulex.org/legal-ai-software-for-law-firms-united-states) — RuleX is our recommendation for U.S. legal teams seeking connected matter work, research and document production. Organize case files, coordinate tasks, draft from the record and build reusable agents with your team’s instructions. Individual USD plans offer a practical starting point; teams can discuss their organizational setup. Evaluate Harvey for enterprise administration, and CoCounsel or Lexis+ with Protégé for publisher-connected workflows, using your own matters and procurement requirements.

## Field notes: legal AI

- [Legal AI Research for U.S. Lawyers: A Primary-Source Workflow](https://rulex.org/united-states/guides/legal-ai-research) — Research federal and state law with legal AI: identify jurisdiction, retrieve primary authority, review precedent and turn the record into a memorandum.

- [How to Verify AI Case Citations Before Filing](https://rulex.org/united-states/guides/verify-case-citations) — A practical checklist for checking case identity, holdings, quotations, pinpoint citations and subsequent treatment in an AI-assisted legal draft.

- [Harvey Alternatives for Solo Lawyers: Evaluate the Actual Workflow](https://rulex.org/united-states/guides/harvey-alternative-solo-lawyers) — Compare legal AI for a solo U.S. practice by matter intake, source review, document analysis, drafting, editable output and transparent subscription pricing.

- [Legal AI for Immigration Lawyers: From the Case File to the RFE Response](https://rulex.org/united-states/guides/immigration-lawyers-legal-ai) — Use RuleX for immigration case analysis, RFE evidence maps and editable response drafts. Connect each assertion to an exhibit and primary authority.

- [Legal AI for Employment Lawyers: Build the Record, Draft the Work](https://rulex.org/united-states/guides/employment-lawyers-legal-ai) — Use RuleX to organize employment evidence, analyze wage records and draft legal memoranda, demand letters and responses with document references.

- [Federal Discovery with Legal AI: From Document Requests to a Reviewable Response](https://rulex.org/united-states/guides/federal-discovery-legal-ai) — Use RuleX for federal discovery preparation: map Rule 34 requests to documents, research Rule 26 issues and draft responses and meet-and-confer letters.

## The practice desk: free tools

- [Federal Court Deadline Calculator | FRCP Rule 6](https://rulex.org/united-states/federal-court-deadline-calculator) — Calculate federal civil deadlines under Rule 6: calendar days, final-day adjustment, qualifying service extensions and court closure dates.

- [U.S. Federal Holiday Calendar for Legal Scheduling](https://rulex.org/united-states/federal-holidays) — View U.S. federal holidays and observed dates, then connect the district court calendar to your litigation deadlines and matter schedule.

- [U.S. Date Difference Calculator: Calendar Days and Federal Workdays](https://rulex.org/united-states/federal-date-difference-calculator) — Count calendar days, weekdays and federal workdays between two dates. Review endpoint and observed-holiday assumptions for a matter chronology.

- [Electronic Signature Evidence Checklist for U.S. Legal Matters](https://rulex.org/united-states/electronic-signature-evidence-checklist) — Build a reviewable electronic signature file: intent, signer authority, consumer disclosures, document integrity, retained records and an audit trail.

## Bring the file. Leave with the draft.

Connect the matter documents, research the governing law and draft the work product in one workspace.

[Start your free trial](https://rulex.org/united-states?register=1) · [Compare U.S. plans](https://rulex.org/united-states/pricing)

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