DOJ Revises Justice Manual to Limit Enforcement Based on Agency Guidance and Expand Whistleblower Dismissals

The boundary between a regulatory suggestion and a federal prosecution is drawn at the drafting of the Justice Manual, the internal rulebook that binds every Department of Justice attorney. By rewriting the manual's sections on the False Claims Act, the department aims to "strengthen False Claims Act enforcement" by formally stripping prosecutors of the ability to use informal agency guidance as a basis for civil enforcement, ensuring that only violations of actual statutes and promulgated regulations can trigger federal penalties.[1]

The revisions, announced on September 18, 2026, codify two major policy shifts that have circulated as temporary directives for years. The update permanently integrates the principles of the 2017 "Brand Memo" and the 2018 "Granston Memo" into the official framework governing the DOJ's civil litigation strategy.[1][5]

Under the newly formalized rules, federal agencies cannot bypass the Administrative Procedure Act's rigorous notice-and-comment rulemaking process by issuing informal guidance documents—such as FAQs, advisory letters, or policy manuals—and then treating them as binding law. The Justice Manual now explicitly prohibits civil enforcement actions based solely on a party's failure to comply with such guidance.[2][3]

"DOJ Formalizes Key FCA Enforcement Reforms," noted the analysis from Mintz published on September 24, highlighting the strict limits placed on agency guidance. While prosecutors can still use guidance to prove a defendant knew about a specific regulatory interpretation, they can no longer use the guidance itself to establish a legal violation.[2]

The second major revision targets the mechanics of the False Claims Act, originally enacted in 1863 under Title 31 of the U.S. Code, specifically the qui tam provision that allows private whistleblowers to sue on behalf of the government. Historically, the DOJ intervened in roughly 20 percent of these cases, leaving the remaining 80 percent to proceed under the relator's control, often resulting in prolonged litigation for healthcare and defense contractors.[4]

The updated manual, specifically altering Section 4-4.110 and related provisions, formalizes the DOJ's authority to affirmatively dismiss these whistleblower suits even when the government declines to intervene. According to the Duane Morris review of the policy, prosecutors are now instructed to evaluate whether a qui tam action lacks merit, interferes with agency policies, or threatens to impose undue discovery costs on the government.

If those conditions are met, the DOJ will move to dismiss the case entirely rather than simply stepping aside. Akin's legal analysis highlights that this shift is designed to weed out parasitic lawsuits that drain federal resources and burden industries with meritless fraud allegations.[4]

For corporate compliance officers and defense attorneys, the manual's revision provides a durable shield against regulatory overreach. Because the changes are now codified in the Justice Manual rather than existing as easily revocable memos, they establish a permanent structural hurdle for future administrations seeking to aggressively expand False Claims Act enforcement without formal rulemaking.[3][5]