The Supreme Court of the United States (SCOTUS) declined to consider an appeal by the North American Meat Institute and supported by 20 states, challenging the constitutionality of California Proposition Number 12 approved by voters in November 2018.  The legislation, enacted by ballot, bans confinement of veal calves and gestating sows in the state of California and prohibits introduction of products derived from animals that are not held under comparable conditions into California. The law will go into effect on January 21st 2022.  Challenges to California Proposition Number 2 enacted in 2008 and the similar Proposition Number 12 have been tried in California courts without success.

With regard to gestation crates, the situation may be moot since most large hog operations and pork packers have either mandated or completed a transition from crates to group housing.  Most egg-producers in Midwest and western states are compliant with rules issued by the State of California