Chambers USA 2026 Again Recognizes Arnold & Porter’s False Claims Act Investigations & Defense Practice as One of the Best in the Country

For the fifth year in a row, Arnold & Porter’s False Claims Act Investigations & Defense practice has again been ranked in Band 1 in the Nationwide: False Claims Act category for its strength across the full spectrum of FCA litigation, investigations, and disclosure work, including intervened and non-intervened qui tam actions.

Chambers USA also again recognized practice co-chairs Tirzah Lollar, Craig Margolis, and Michael Rogoff for their sophisticated FCA expertise in representing clients across a wide range of industry sectors, from government contractors to high tech to life sciences companies. Additionally, Chambers USA has once again recognized Christian Sheehan for his excellent work in FCA investigations and litigation.

One client remarked, “The team has consistently demonstrated deep-subject matter expertise, paired with a highly tactical and practical approach for handling a complex matter. Its ability to remain agile in the face of unexpected challenges has been critical.” Another commented, “The firm excels at handling complex matters before government regulators that require sophisticated analysis and anticipation of potential pitfalls.” We are grateful to our clients who continue to trust us with their most complex and contentious FCA matters. Learn more about our False Claims Act Investigations & Defense practice here.

The 2026 edition of Chambers USA named Arnold & Porter a “Leading Firm” in 75 practice areas across the nation and recognized 142 lawyers as “Leading Individuals. The full list of the firm's rankings is available for review.

© Arnold & Porter Kaye Scholer LLP 2026 All Rights Reserved. This Blog post is intended to be a general summary of the law and does not constitute legal advice. You should consult with counsel to determine applicable legal requirements in a specific fact situation.