Some clauses of the prior review rules for broadcasting commercials, which are enforced by the Broadcasting Act violate the right to free speech guaranteed by the Constitution. The range of prohibited expression under the clauses are too vague and overbroad to distinguish between permissible and impermissible broadcasting commercials. The clauses also fail to pass the constitutional principle that restrict government from excessive regulation on constitutional rights. The principle has a four-pronged test on the government action; 1) the validity of its goal; 2) availability of appropriate means; 3) necessity of infringement; 4) and balancing test of interests. Some clauses of the prior review rules that forbid expressions on sensitive political and cultural issues fail to pass none of the four-pronged standards.