The U.S. Supreme Court today heard arguments in a case that could reshape the years-long legal fight over Roundup, the world's most widely used weed killer.

It's been a mainstay of industrial agriculture in the U.S. and around the globe, but thousands of lawsuits allege that one of its key ingredients may be linked to cancer.

Our justice correspondent, Ali Rogan, has more on the debate before the court.

For many years, researchers have debated if exposure to glyphosate, the herbicide and key ingredient in Roundup, causes cancer.

That debate has led to tens of thousands of lawsuits against Bayer, the company that makes Roundup,

claiming it failed to warn consumers about potential health risks.

Bayer argues federal pesticide laws shield them and that the EPA has never declared their

product contains cancer-causing ingredients.

Today's arguments unfolded against a backdrop of political tensions over pesticides,

both within the Trump administration and the broader, Make America Healthy Again movement.

To help us understand the potential real-world implications of whatever the court decides,

were joined by Helena Badaemiller-Evich, founder of the Food Fix Newsletter, who has been tracking

the policy implications of this debate.

Helena, thanks so much and welcome back to the NewsHour.

Thanks for having me.

So tell us why do farmers and other folks in the agriculture business, why is Roundup so widely

used?

Yeah, so it is the most widely used weed killer or herbicide in the U.S.

And we particularly use it to raise crops like corn and soy and cotton.

And it is a really good way to handle weeds.

It is efficient and for decades, farmers were really marketed to that this was so much less toxic than other options.

And so it is commonly used.

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