Dennis Raglin was quoted in a Daily Journal article titled “Roundup Ruling Fuels Fears of Broader Shield for Manufacturers.” The article discusses the recent U.S. Supreme Court’s decision shielding Bayer from certain Roundup failure-to-warn claims, which plaintiffs’ lawyers say could strengthen federal preemption defenses and threaten California’s Proposition 65 warning regime.

Raglin said the decision is likely to have significant implications beyond glyphosate because it reinforces federal preemption arguments for chemicals regulated by agencies such as the U.S. Environmental Protection Agency. “I think there are some Prop 65 chemicals regulated by federal agencies, particularly EPA, that could be vulnerable to a Monsanto preemption challenge,” Raglin said.

He noted the Supreme Court’s decision follows a series of recent federal court victories in which judges barred enforcement of Proposition 65 warning requirements for chemicals, including acrylamide, titanium dioxide, cocamide DEA, and glyphosate, concluding that the required warnings violated companies’ First Amendment rights because they were not purely factual or uncontroversial. Taken together, Raglin said, those rulings could encourage defendants to challenge Proposition 65 claims on both preemption and constitutional grounds.

“Glyphosate is an example of a Prop 65 chemical being unenforceable on two constitutional grounds,” he said. “This would give defendants two separate grounds to challenge and force plaintiffs to overcome two strong defenses.”

Raglin added that the decision could embolden California state courts to more readily entertain preemption arguments, an area where they have historically been reluctant to intervene. “It is logical to expect challenges to other Proposition 65-listed chemicals that are also regulated by federal agencies,” he said, pointing to bisphenol S (BPS) as one example because it is regulated by both the EPA and the Food and Drug Administration.

Read the article. Subscription may be required.

©2026 Carlton Fields, P.A. Carlton Fields practices law in California through Carlton Fields, LLP. Carlton Fields publications should not be construed as legal advice on any specific facts or circumstances. The contents are intended for general information and educational purposes only, and should not be relied on as if it were advice about a particular fact situation. The distribution of this publication is not intended to create, and receipt of it does not constitute, an attorney-client relationship with Carlton Fields. This publication may not be quoted or referred to in any other publication or proceeding without the prior written consent of the firm, to be given or withheld at our discretion. To request reprint permission for any of our publications, please use our Contact Us form via the link below. The views set forth herein are the personal views of the author and do not necessarily reflect those of the firm. This site may contain hypertext links to information created and maintained by other entities. Carlton Fields does not control or guarantee the accuracy or completeness of this outside information, nor is the inclusion of a link to be intended as an endorsement of those outside sites.

Related People

Media Contact

Jump to Page

Carlton Fields, P.A. Cookie Preference Center

Your Privacy

When you visit our website, we use cookies on your browser to collect information. The information collected might relate to you, your preferences, or your device, and is mostly used to make the site work as you expect it to and to provide a more personalized web experience. For more information about how we use Cookies, please see our Privacy Policy.

Strictly Necessary Cookies

Always Active

Necessary cookies enable core functionality such as security, network management, and accessibility. These cookies may only be disabled by changing your browser settings, but this may affect how the website functions.

Functional Cookies

Always Active

Some functions of the site require remembering user choices, for example your cookie preference, or keyword search highlighting. These do not store any personal information.

Form Submissions

Always Active

When submitting your data, for example on a contact form or event registration, a cookie might be used to monitor the state of your submission across pages.

Performance Cookies

Performance cookies help us improve our website by collecting and reporting information on its usage. We access and process information from these cookies at an aggregate level.

Powered by Firmseek