Host Jonathan Porter welcomes back to the show Husch Blackwell litigator Tanner Cook to discuss an assortment of recent False Claims Act-related legal and policy developments. A U.S. Supreme Court FCA decision, a rare FCA jury trial result, and a growing circuit court split—Episode 21 covers all of these developments and more.

The discussion begins with the February Supreme Court unanimous decision in Wisconsin Bell that clarified important concepts surrounding the definition of a claim under the FCA. While a victory for the whistleblower, the decision was a narrow one, leaving some important questions untouched, including the constitutionality of the FCA’s qui tam provisions. From there, the conversation pivots to a First Circuit decision in United States v. Regeneron Pharmaceuticals that reads into FCA enforcement a “but-for” causation standard, widening a circuit split on the causation issue. The episode then covers a big defense win for a Medicare Advantage plan accused of making reverse false claims. Finally, the episode discusses a new memorandum from Attorney General Pam Bondi that narrows FCA enforcement, before concluding with a discussion of the Supervalu trial and its implications for FCA enforcement.

Jonathan Porter | Full Biography

Jonathan focuses on white collar criminal defense, federal investigations brought under the False Claims Act, and litigation against the government and whistleblowers, where he uses his experience as a former federal prosecutor to guide clients in sensitive and enterprise-threatening litigation. At the Department of Justice, Jonathan earned a reputation as a top white collar prosecutor and trial lawyer and was a key member of multiple international healthcare fraud takedowns and high-profile financial crime prosecution teams. He serves as a vice chair of the American Health Law Association’s Fraud and Abuse Practice Group and teaches white collar crime as an adjunct professor of law at Mercer University School of Law.

Tanner Cook | Full Biography

Based in St, Louis, Tanner is a member of Husch Blackwell’s Commercial Litigation group and focuses on consumer class actions, antitrust litigation, and multidistrict litigation. Tanner frequently takes the lead in drafting critical pretrial briefs, including dispositive motions and evidentiary challenges. In addition to his commercial litigation practice, Tanner regularly assists on white collar defense matters, especially in the False Claims Act context. Tanner has significant experience defending companies from qui tam whistleblower suits at every stage of the litigation process, combining his deep substantive knowledge of the law with creative defense strategies. Tanner served as law clerk at the U.S. District Court, Eastern District of Missouri, for Judge Sarah E. Pitlyk.

For Further Reading

Wisconsin Bell Inc. v. United States ex rel. Todd Heath, case number 23-1127, before the Supreme Court of the United States, Decided February 21, 2025.

Robert K. Blaisdell, Brian G. Flood, and Taylor White. “Beware of Offers Too Good to Be True: Recent Federal Lawsuit Highlights Kickback and False Claims Risks,” March 14, 2025.