More than 1,000 Make America Healthy Again advocates are anticipated to attend a rally Monday morning in front of the Supreme Court to protest the Trump administration’s handling of the herbicide glyphosate, the main chemical in RoundUp.

The “People vs. Poison” rally, organized by the “Food Babe” health activist Vani Hari, is scheduled to coincide with Supreme Court oral arguments over whether Bayer, the maker of RoundUp, should be held legally liable for not informing its customers that glyphosate could cause cancer.