Cal. Fin. Code § 1894

Nothing in this division restricts one or more international or foreign banking or financing corporations organized under the laws of the United States from merging into one or more state, international or foreign banking or financing corporations. For the purpose of effecting any such merger any such international or foreign banking or financing corporation shall be deemed a “foreign corporation” as that term is used in Section 1108 of the Corporations Code and the laws of Congress shall be deemed the “laws of the state” in which such international or foreign banking or financing corporation is formed.