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WASHINGTON, DC - JULY 15: Health and Human Services (HHS) Secretary Robert F. Kennedy Jr., (L) U.S. Sen. Roger Marshall (R-KS), (C) and U.S. Secretary of Agriculture Brooke L. Rollins (R) attend a roundtable discussion on soil health in the Mike Mansfield Room at the U.S. Capitol on July 15, 2025 in Washington, DC. Marshall, who created the Senate MAHA Caucus, was joined by Health and Human Services (HHS) Secretary Robert F. Kennedy Jr. and U.S. Secretary of Agriculture Brooke L. Rollins to discuss his Plant Biostimulant Act, which creates a process for approving the commercial use of plant biostimulants as alternatives to synthetic pesticides and fertilizers. (Photo by Michael M. Santiago/Getty Images)