That seems to be the intention of the Treasury Department, who described mixers as primarily used for illicit money laundering "by a broad range of illicit actors, including state-affiliated cyber actors, cyber criminals, and terrorist groups".
Treasury Department introduces proposal targeting crypto mixers
The U.S. Treasury Department introduced a proposal for new regulation that would require cryptocurrency mixers (also called tumblers) to up their recordkeeping and reporting processes. Needless to say, for a class of projects intended to help people anonymize their cryptocurrency transactions and make them more challenging for governments and others to track, this would somewhat undermine the whole point.