He put his signature on the bill after taking this oath: > I (Governor) do solemnly swear that I will support and defend the Constitution of the United States

He put his signature on the bill after taking this oath: > I (Governor) do solemnly swear that I will support and defend the Constitution of the United States and the Constitution of the State of California against all enemies foreign and domestic, that I will bear true faith and allegiance to the Constitution of the United States and the Constitution of the State of California… https://en.m.wikipedia.org/wiki/Governor_of_California https://en.m.wikipedia.org/wiki/Governor_of_California