Ethically, I disagree with your argument. See: unlawful asset theft by police departments, which the supreme Court recently confirmed is illegal.
But from a legal standpoint your argument doesn't hold water. The Constitution is THE binding legal document of the USA, from which literally every aspect of the US government, and thus justice system, derives authority. There is nothing but strict adherence to the Constitution, trying to work outside it might work for a bit but will end up with someone standing before the supreme Court to answer for it.