No, he is correct. The delegation of authority is from the People, through their elected representatives in a Constitutional Convention, not the States. The People are the master, the state and federal government are the servants. The only power they have is what the People have given them through their written constitutions. In America, and this is an important difference from Europe, individuals retain power that they have not delegated. They kept back individual liberties from government over which authority was not delegated. The exercise therof was subject to the Maxim “sic utere tuo ut alienum non laedas” - each one must so use his own as not to injure his neighbor. (Equality of rights before the law.)
In France, the individual surrendered all his individual natural power in exchange for what was considered to be superior enumerated civil rights which were subject to the communal good.
Having read some of the Founders' thoughts and other writers that followed, it appears to me the idea was that The States themselves would be jealous guardians of their retained powers, thereby keeping the feral government in check.
I think we would all agree, something went awry.