It’s illegal because it’s common for criminals to use other parties to make their money clean. This allows governments to go after those that assist in committi

It’s illegal because it’s common for criminals to use other parties to make their money clean. This allows governments to go after those that assist in committing crimes that otherwise would have not be considered to be breaking the law. It’s similar to knowingly trading in stolen goods. If there are no laws against that then black market trading is far less risky and far more lucrative.