California Code
ARTICLE 4 - Corruption of Voting
Section 18577.

18577. Any person having charge of a completed vote by mail ballot who willfully interferes or causes interference with its return to the local elections official having jurisdiction over the election is guilty of a misdemeanor punishable by imprisonment in the county jail not exceeding six months, by a fine not exceeding ten thousand dollars ($10,000), or by both the fine and imprisonment.

(Amended by Stats. 2007, Ch. 508, Sec. 117. Effective January 1, 2008.)