As of the latest available information, no federal appeals court has issued a ruling that universally prohibits the use of cryptocurrency mixers as a matter of law in all cases. While there have been prosecutions involving crypto mixers, these cases do not establish a broad legal rule against their use. Additionally, no court has definitively ruled that crypto mixers are not protected by the First Amendment in all circumstances. Legal outcomes in cases involving crypto mixers often depend on specific facts and charges, such as money laundering or facilitating illegal transactions. These cases are typically resolved based on the application of existing laws to the particular circumstances, rather than establishing a blanket prohibition on crypto mixers. Therefore, the legal status of crypto mixers remains nuanced and context-dependent, without a sweeping federal appellate decision categorically banning them.