Cal. ELEC § 20203

Any person who solicits or receives contributions on behalf of any candidate or committee for the purported and exclusive use of that committee or the candidate’s election campaign and who is not authorized by the candidate or committee or the candidate’s or committee’s designated agent to do so, shall include a notice in any fundraising communication, whether through any broadcasting station, newspaper, magazine, printed literature, direct mailing, or any other type of general public advertising, or through telephone or individual oral fundraising appeal, clearly and conspicuously stating that the person is not authorized by the candidate or committee and that the candidate or committee is not responsible for the actions of that person.