Many laws enacted by the states have been nullified by the courts because those laws violate freedoms guaranteed by the Constitution. The usual justification for these laws has taken two forms:
1. "Waaaal, the Constitution don't specifically say yew cain't shoot black people, so the states can decide whether that's lawful or it ain't."
2. The rights reserved to the states by the Constitution include the right to override or nullify the Constitution (a bizarre turn of "logic," but nevertheless, often employed).
The recent iteration of this has been the idiot bleat that the Constitution doesn't mention abortion. That's breathtakingly stupid--there are literally thousands of situations that the drafters of the Constitution could never have dreamed of. For instance, should social media be completely unregulated because it isn't mentioned in the Constitution? Do citizens have the right to own nuclear weapons because the Constitution doesn't say anything about them?
Boiler should educate himself. When the Constitution was drafted, a black person was officially only 3/5 of a human being. That concept was changed (now, Boiler thinks it's only 1/5). States can't say that black people aren't people.