In the United States, states have primary jurisdiction in matters of public morality. The topfreedom movement has claimed success in a few instances in persuading some state and federal courts to overturn some state laws on the basis of sex discrimination or equal protection, arguing that a woman should be free to expose her chest (i.e., be topless) in any context in which a man can expose his. Other successful cases have been on the basis of freedom of expression in protest, or simply that exposure of breasts is not indecent (or similar terminology).