Warren Lehrenbaum
Overview
Warren Lehrenbaum represents individual companies and trade associations before the U.S. Environmental Protection Agency (EPA), the United States Department of Agriculture (USDA) and the Food and Drug Administration (FDA), where he advocates on behalf of individual products as well as broad policy issues.
Career & Education
- Binghamton University (State University of New York), B.A., 1985
- The George Washington University Law School, J.D., with honors, 1989
- District of Columbia
- Maryland
Other Affiliations
American Bar Association; Environmental Law Institute
- Farsi
Warren's Insights
Client Alert | 6 min read | 06.26.26
On June 25, 2026, the U.S. Supreme Court issued its landmark decision in Monsanto Co. v. Durnell, No. 24-1068, resolving a circuit split over whether the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) preempts state law failure-to-warn claims challenging EPA-approved pesticide labels. In a 7-2 opinion, the Court held that FIFRA expressly preempts state tort claims that would require a manufacturer to add or modify warnings on a pesticide label, at least where the U.S. Environmental Protection Agency (EPA) has evaluated the relevant risk and approved the label, whether with warnings reflecting the agency’s assessment or without a corresponding warning.
Speaking Engagement | 05.28.26
Insights
How TSCA Modernization May Harm Innovation, And What Companies Can Do In Response
|10.26.16
Bloomberg BNA Daily Environment Report
Environment — Air, Water, Chemicals, Wildlife, and Vapor Are Key Issues
|01.19.16
Crowell & Moring's Regulatory Forecast 2016
Regulatory Forecast 2016: What Corporate Counsel Need to Know for the Coming Year
|01.19.16
a Crowell & Moring LLP publication
Regulatory Forecast 2015: What Corporate Counsel Need to Know for the Coming Year
|01.31.15
a Crowell & Moring LLP publication
California Green-Lights Its Green Chemistry Regulations
|11.06.13
DRI, Vol. 16, Issue 3
Pesticides, Chemical Regulation, and Right-To-Know 2012 Annual Report: Toxic Substances Control Act (TSCA)
|04.01.13
ABA Environmental Law Annual Update
Frankenfood Fight: Why Mandatory Labeling of GMO Foods is Unnecessary and Unwise
|10.26.12
Pesticide & Chemical Policy Week in Review
Speaking Engagement Spotlight: 2026 ICPHSO Annual Meeting and Training Symposium
|12.17.25
Crowell & Moring’s Retail & Consumer Products Law Observer
Federal PFAS Reporting Delayed, but Aerospace and Car-Part Companies are not Off-the-Hook
|05.16.25
Crowell & Moring’s Transportation Law: Moving Forward
EPA’s Shift In Chemical and Hazardous Materials Regulation and What Retailers Can Expect
|10.27.21
Crowell & Moring’s Retail & Consumer Products Law Observer
Recent EPA Developments and Their Impact on Retailers
|03.25.20
Crowell & Moring's Consumer Products Law Observer
Use Foam? You may be subject to a new proposed EPA rule
|01.22.15
Crowell & Moring's Retail & Consumer Products Law Observer
Warren's Insights
Client Alert | 6 min read | 06.26.26
On June 25, 2026, the U.S. Supreme Court issued its landmark decision in Monsanto Co. v. Durnell, No. 24-1068, resolving a circuit split over whether the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) preempts state law failure-to-warn claims challenging EPA-approved pesticide labels. In a 7-2 opinion, the Court held that FIFRA expressly preempts state tort claims that would require a manufacturer to add or modify warnings on a pesticide label, at least where the U.S. Environmental Protection Agency (EPA) has evaluated the relevant risk and approved the label, whether with warnings reflecting the agency’s assessment or without a corresponding warning.
Speaking Engagement | 05.28.26



