In June 2025, the U.S. Supreme Court reaffirmed key regulations affecting animal industries by twice rejecting challenges to the Horseracing Integrity & Safety Act (HISA) of 2020 and California’s Proposition 12, which mandates humane living conditions for pigs. Despite claims from opponents like the Pacific Legal Foundation that the Court’s vacating of a lower court ruling signaled ongoing constitutional concerns, the Supreme Court declined to review multiple appeals against HISA, effectively upholding its enforcement and leaving the status quo intact. Legislative efforts to dismantle HISA through a bipartisan bill have also stalled, with industry leaders defending the Act as essential to maintaining safety and integrity in horse racing.

Similarly, the Court denied a petition from the Iowa Pork Producers Association challenging California’s Proposition 12, which requires pork sold in the state to come from pigs raised with sufficient space. This decision marks the 19th consecutive federal court loss for pork industry efforts to overturn animal welfare laws like Proposition 12 and Massachusetts’s Question 3. Advocates argue these rulings reflect strong voter support for higher welfare standards and urge the pork industry to shift focus from legal battles to improving animal housing conditions to meet growing consumer demand.