I would love to have a general conversation around mixers and if they are legal. I've heard both sides. Would be great to have someone involved in the legal side of things like Ciphertrace or a regulator to shed light on this topic
Mixers' are the one who breaks the link of your old address and new address, your old address are associated the address where you first bought your bitcoin. The main essence of mixer it for your address not to be traceable. And yes, bitcoin mixer is legal, it's legality will be questioned according to how the user will use it cause there are instances where mixer is being used for doing illegal transactions so that the doer won't be traced.