Supreme Court Backs California's Humane Treatment Law for Pigs.

The Supreme Court upheld a California law that requires pork sold in the state to come from breeding pigs housed in spaces that allow them to move around freely. The law was challenged by pork producers who claimed it interfered with interstate commerce and sound business practices. The court ruled that the measure did not violate constitutional limits on state laws that affect conduct beyond the state’s borders. The decision was badly fractured and featured competing rationales, but the basic vote was 5 to 4.