Cal. Gov't Code § 86112.3
(a) Each person filing a report pursuant to this article who sends any written or printed invitation to an elected state officer, candidate for elective state office, legislative official or agency official, shall include on the invitation or on a letter attached to the invitation the following typed, printed, or handwritten statement that is at least as large and readable as 8-point Roman boldface type, in a color or print that contrasts with the background so as to be easily legible:
Attendance at this event by a public official will constitute acceptance of a reportable gift.