Kennedy’s War on Pesticides Riles Farmers and a G.O.P. Senator

Health Secretary Robert F. Kennedy Jr.’s long-running crusade against agricultural chemicals ran into pushback on Tuesday from the agriculture industry and a Republican senator, who pointedly instructed Mr. Kennedy not to interfere with the livelihood of American farmers by suggesting certain pesticides are unsafe.

The admonition from the senator, Cindy Hyde-Smith of Mississippi, came as President Trump was preparing to release a report on Thursday from a commission, led by Mr. Kennedy and named for his movement, to examine the causes of childhood chronic disease.

Mr. Trump established the panel to look at a range of potential factors, including chemicals, which Mr. Kennedy has said “pollute our bodies the same way that they pollute the soil.” Mr. Kennedy and his followers in the “Make America Healthy Again” movement have previously singled out the agricultural chemical glyphosate, originally made by Monsanto, which is now owned by Bayer, the German chemical and pharmaceutical giant.