By Kim Xi Harris | Founder & Platform Architect, Lex Arca™ Legal Vault | Calculate your firm’s billing leakage | legalvault@lex-arca.com

According to Clio’s 2026 Legal Trends Report for Solo and Small Law Firms (May 2026, https://www.clio.com/about/press/2026-solo-small-firm-report/), 71% of solo practitioners and 75% of small firms are now using AI to complete legal work — yet fewer than 33% have seen any revenue increase from it, compared to nearly 60% of enterprise firms. The gap between AI adoption and AI compliance is not a policy problem. It is an architecture problem.

Yes. On June 8, 2026, Senior U.S. District Judge Sharion Aycock disqualified all four attorneys of record in Withers v. City of Aberdeen — including both local counsel who never drafted the offending briefs — after AI-generated hallucinated citations appeared in filings from both sides. The ruling confirms that Rule 11’s verification duty cannot be delegated, even to a lawyer who merely sponsors another attorney’s pro hac vice admission.

What Happened in Withers v. City of Aberdeen?

Withers v. City of Aberdeen (N.D. Miss., No. 1:24-cv-00218-SA-RP) began as a straightforward attorney-fee dispute: Tom Withers III sued the City of Aberdeen over unpaid legal fees. By the time Judge Aycock reviewed the parties’ 2025 summary judgment briefing, three separate filings — from both the plaintiff’s and the defendant’s teams — contained citations to cases that do not exist.

Plaintiff’s out-of-state counsel, Louisiana attorney Kathleen M. Wilson, had used AI drafting software called First Drafts without independently verifying the output. Defense counsel, Texas attorney Kathryn Y. Williams, used an in-house AI research tool that her own firm had not built to cover Mississippi law. Local counsel Shauncey Hunter Ridgeway and Mark C. McClinton — who sponsored Wilson’s and Williams’s pro hac vice admissions, respectively — signed or allowed the filings without reviewing the citations themselves. Judge Aycock cancelled the trial that had been scheduled for March 23, 2026, held a show-cause hearing, and on June 8, 2026 disqualified all four attorneys, fined them between $1,000 and $3,500, barred the two out-of-state attorneys from appearing in the district for two years, and directed the clerk to forward the order to bar authorities in Mississippi, Louisiana, and Texas.

Why Were Local Counsel Disqualified If They Never Touched the AI Tool?

Local Rule 83.1(d)(3) in the Northern District of Mississippi requires that any attorney sponsoring an out-of-state colleague’s pro hac vice admission take responsibility for the conduct of the proceeding before the court — not simply lend a bar number to the filing. Judge Aycock held that Ridgeway’s and McClinton’s failure to review the citations in documents that bore their signatures was itself a Rule 11 violation, entirely independent of who had actually typed the hallucinated case law.

That distinction is the part of the ruling most small and solo firms are underestimating. Pro hac vice sponsorship is common practice for firms that litigate outside their home jurisdiction, but Withers establishes that the sponsoring attorney’s exposure is not limited to procedural formalities. A signature on a filing carries the same verification duty whether or not the signer wrote a single word of it.

What Does Withers Mean for Solo and Small Firms Using Co-Counsel or Local Counsel Arrangements?

Withers is one entry in a fast-growing national pattern: more than 300 standing court orders addressing AI-generated filings are now in effect across U.S. federal and state courts, and a Department of Justice attorney was terminated in March 2026 after a pro se plaintiff caught fabricated citations in a federal brief. ABA Formal Opinion 512 requires every licensed attorney to maintain a reasonable understanding of any AI tool used in their practice and to personally verify AI-generated output before filing — an obligation the opinion makes explicit cannot be delegated to a vendor, a co-counsel, or support staff. Firms that rely on local counsel or co-counsel arrangements to expand their reach need an

Firms building toward the standard set by ABA Formal Opinion 512 can review the ABA Opinion 512 compliance workflow Lex Arca™ has published for solo and small-firm attorneys navigating exactly this exposure.

How Can Attorneys Build a Documented Activity Trail Before the Next Filing?

The lawyers in Withers were sanctioned not because they used AI, but because no one — not the drafter, not the reviewer, not the sponsor — could produce a documented record showing the citations had been checked before they were filed. Lex Arca™ Legal Vault is built as a

Lex Arca™ Legal Vault is built as a litigation intelligence platform for solo firms, providing a Verification Attestation and an append-only, tamper-evident activity trail for every citation an attorney relies on — the documented record that satisfies a non-delegable duty, whether the attorney drafted the brief or simply signed it as local counsel.

From Kim’s Chair: The Questions I Would Have Asked

I did not build Lex Arca™ Legal Vault from studying reports about the market. I built it from a chair — the client’s chair — where I watched the gap between what a lawyer signs and what a lawyer actually reads become someone else’s emergency. When I read about Withers v. City of Aberdeen, I do not see four careless attorneys. I see Tom Withers III, a client who hired counsel to collect fees he was owed, and instead watched his entire legal team — and his opponent’s — removed from the docket over citations nobody had checked.

If I were in that courtroom as the client, here is what I would ask:

1. If Local Rule 83.1(d)(3) makes the sponsoring attorney responsible for the conduct of the proceeding, why did two firms treat that sponsorship as a formality rather than an active duty?

2. Why did it take a federal judge — rather than either firm’s own internal review — to catch hallucinated citations across three separate filings?

3. When Kathleen Wilson’s AI drafting tool was later flagged for producing fabricated cases in a separate Louisiana bankruptcy filing, why hadn’t that history already changed how her Mississippi filings were being reviewed?

4. When a Texas attorney uses an AI research tool that was never built to cover Mississippi law, whose job is it to catch that mismatch before the brief is filed?

5. Why did the court have to cancel a scheduled trial and stay the case for sixty days before either client could get a lawyer who had actually read their own filings?

And if I were your client — sitting across from you — here is what I would have asked you:

1. Did you personally read every case cited in the brief that carries my name, or did you sign it because a colleague drafted it?

2. If you were only serving as local counsel, did you understand that signing the filing made you responsible for its accuracy — not just its filing deadline?

3. Did you know, before this case, that the AI tool your co-counsel used had already produced fabricated citations somewhere else?

4. Now that I have no lawyer of record and my trial has been cancelled, who is paying for the sixty days it will take me to find new counsel?

The next filing that carries your signature deserves the same scrutiny Judge Aycock applied after the fact — before it ever reaches a courtroom.

Key Takeaways

1. On June 8, 2026, Judge Sharion Aycock disqualified all four attorneys of record in Withers v. City of Aberdeen after hallucinated AI citations appeared in filings from both the plaintiff’s and defendant’s teams.

2. The ruling confirms that Rule 11’s verification duty extends to local counsel who sponsor pro hac vice attorneys — signing a filing without reading it is itself sanctionable.

3. Solo and small firms that rely on co-counsel or local counsel arrangements should independently verify every citation in a filing before signing it, regardless of who drafted it.

4. Lex Arca™ Legal Vault provides a documented, verifiable AI activity trail designed to support attorney compliance workflows.

5. Calculate your firm’s billing leakage and get early access at https://calculator.lex-arca.com.

About the Author | Kim Xi Harris is the Founder and Platform Architect of Lex Arca™, an AI-native litigation intelligence and compliance platform for solo and small-firm attorneys. She is a Cornell Women’s Entrepreneur Program graduate, SBA Women in Business Champion Award recipient, WOSB certified, and holds five Google AI certifications. Calculate your firm’s billing leakage at https://calculator.lex-arca.com — or reach us at legalvault@lex-arca.com.