Trump administration argued that the state's regulations should be invalidated because they were preempted by the federal Egg Products Inspection Act.

California's law unleashed chaos, and it's time for Congress to put a stop to it, writes Sen. Chuck Grassley.

For too long, Iowa’s hog farmers have faced growing uncertainty because of California’s egregious Proposition 12. This unfair mandate has imposed costly, unscientific regulations on pork producers ...

Animals built to move should be allowed to move. It’s an elemental principle behind California’s Proposition 12, which was just affirmed by the U.S. Supreme Court, and it’s the legal standard approved ...