The state law violates federal law, the federal appellate court ruled Jan. 15 in a 2-1 decision, which is considered a victory for big business and a major blow to workers.

The federal appeals court overturned the decision of a lower court judge who had invalidated California's ban on possession of large-capacity magazines, like the ones used in the killings at the Santa Clara Valley Transportation Authority, as well as the recent fatal shootings at a Michigan high school.