@nicholas @Zennagain @icare4america @realcaseyrollins in fact, as we are discussing this specific mention of the 10th Amendment, let me give you a taste of what's in Black's Law Dictionary

> But today the Tenth Amendment provides only a limited check on Congress's power to regulate the states. Cf. SEPARATION OF POWERS. [Cases: States 🔑 4.16.]

edit: the [Cases: States 🔑 4.16.] is referring to an index of citations in the West Key-Number system used by lawyers. I'd link the citations this is referring to so you can see the whole history of caselaw and rulings, but that system is limited in access to lawyers and legal firms.