1. Home
  2. |Insights
  3. |Defendant’s Reasonable Interpretation of Ambiguous Regulation Negates FCA Liability

Defendant’s Reasonable Interpretation of Ambiguous Regulation Negates FCA Liability

Client Alert | 1 min read | 12.01.15

The D.C. Circuit overturned a jury verdict against MWI Corp., represented by C&M, in a long-running civil FCA suit in which the government asserted claims for approximately $225 million in trebled damages (plus additional civil penalties), alleging that false claims and statements were submitted to the Export-Import Bank in connection with eight loans to Nigeria for the purchase of MWI's water pumps. The court held that there was no evidence that the government "had officially warned MWI away from its otherwise facially reasonable interpretation of [an] undefined and ambiguous [regulatory] term" and ruled that, in such a situation, the FCA's knowledge/scienter element cannot be established.


Insights

Client Alert | 5 min read | 12.12.25

Eleventh Circuit Hears Argument on False Claims Act Qui Tam Constitutionality

On the morning of December 12, 2025, the Eleventh Circuit heard argument in United States ex rel. Zafirov v. Florida Medical Associates, LLC, et al., No. 24-13581 (11th Cir. 2025). This case concerns the constitutionality of the False Claims Act (FCA) qui tam provisions and a groundbreaking September 2024 opinion in which the United States District Court for the Middle District of Florida held that the FCA’s qui tam provisions were unconstitutional under Article II. See United States ex rel. Zafirov v. Fla. Med. Assocs., LLC, 751 F. Supp. 3d 1293 (M.D. Fla. 2024). That decision, penned by District Judge Kathryn Kimball Mizelle, was the first success story for a legal theory that has been gaining steam ever since Justices Thomas, Barrett, and Kavanaugh indicated they would be willing to consider arguments about the constitutionality of the qui tam provisions in U.S. ex rel. Polansky v. Exec. Health Res., 599 U.S. 419 (2023). In her opinion, Judge Mizelle held (1) qui tam relators are officers of the U.S. who must be appointed under the Appointments Clause; and (2) historical practice treating qui tam and similar relators as less than “officers” for constitutional purposes was not enough to save the qui tam provisions from the fundamental Article II infirmity the court identified. That ruling was appealed and, after full briefing, including by the government and a bevy of amici, the litigants stepped up to the plate this morning for oral argument....