U.S. District Judge Roger Benitez had ruled the California law unconstitutional, but the 9th Circuit ruled the law can remain in place while the state appeals
There are a number of potential national firsts that could emerge from the country's most populous state with Newsom's approval. His Democratic Party wields supermajority control in the legislature, and the governor must sign, veto or allow bills to become law without his signature by Oct 14.
The divided en banc ruling from the 9th Circuit Court of Appeals backed the constitutionality of two California laws banning magazines that can hold 10 or more rounds.