A divided federal appeals court on Tuesday upheld an injunction barring California from requiring businesses to warn consumers that glyphosate, the active ingredient in Roundup weedkiller, causes cancer.
In a 2-1 decision, the 9th U.S. Circuit Court of Appeals said it was unconstitutional for California to require Bayer AG’s (BAYGn.DE) Monsanto unit, which makes Roundup, and some agricultural producers to provide the warning under a state law known as Proposition 65.
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