Trump admin sides with Roundup maker at Supreme Court

By Lesley Clark, Niina H. Farah | 12/02/2025 01:26 PM EST

The administration urges the justices to take up Bayer’s request to kill lawsuits that claim its product caused cancers.

The Supreme Court is pictured, bordered by trees and an American flag on a pole.

The Supreme Court in Washington on June 30, 2024. Susan Walsh/AP

The Trump administration is siding with the manufacturer of a popular weedkiller, urging the Supreme Court to take up Bayer’s effort to toss thousands of lawsuits against the pesticide Roundup.

In a brief filed Monday with the court, Solicitor General D. John Sauer backed arguments made by the biotechnology company that says federal law invalidates a swath of lawsuits alleging the weedkiller causes cancer.

Bayer, which acquired Monsanto in 2018, argues that federal law prevents it from adding a label to Monsanto’s Roundup product line warning customers of alleged cancer risks of the active ingredient, glyphosate.

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The company in April asked the court to intervene, saying it has been inundated with “unfounded” legal challenges across the country from customers alleging the weedkiller was responsible for their cancers.

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