The Constitution granted the Federal Government limited powers. But included in those powers is the power to self-define and self-regulate.

Thus, should the legislature pass a law, and should the Supreme Court uphold that law, it is deemed Constitutional by the body specifically-empowered to make that determination.

The Money Laundering Control Act made the laundering of money a crime. It was passed by the Legislative branch of the Federal Government as prescribed by the Constitution.

The MLCA has been upheld by the Supreme Court, or rather, cases have been brought before in which the government's prosecution has rested on enforcement of the law, and the Justices have upheld it by interpreting the law, as written, without deeming it unconstitutional (Santos, Schueller, etc.)

Thus, the law is Constitutional pending some future case.

Thus everything you just said is nonsense words.