Soon after a U.S. District Judge stopped enforcement of California’s ammunition background check system, the 9th Circuit Court of Appeals granted a stay.
There was NO doubt that when the 9th Circuit got their hands on this judgement, what the outcome would be. Even though President Trump has made some major inroads by appointing several conservative judges to the 9th Circuit, it's still a liberal bastion of judges whose court rulings have the distinct honor of being the court with the most overturned decisions by the U.S. Supreme court.