The Supreme Court sided with the maker of the Roundup weedkiller on Thursday in a ruling expected to block thousands of lawsuits alleging it failed to warn people that the product could cause cancer.

The case came before the justices after a tidal wave of litigation that included some multibillion-dollar verdicts against the global agrochemical manufacturer Bayer, which acquired Roundup when it bought its original manufacturer Monsanto in 2018.

The decision is a victory for the Trump administration, but one that could be tricky politically since allies in the Make America Healthy Again movement want to rein in pesticide use.