A bill to introduce a constitutional amendment to secure farmers’ rights was approved by a 2-1 margin in the Missouri Lower House. The proposed legislation, which now requires approval of the Missouri Senate, would base housing and management of livestock on “scientific principles approved by the legislature.”

The proposal, which must be approved by voters in November, would establish the right to raise livestock in a humane manner and bar laws that create an “undue economic burden.” The initiative was stimulated by a proposed ballot measure to restrict dog breeding, advanced by a coalition of animal rights groups including the HSUS.