[Roscoe]

I think you are incorrectly reading this to suggest that this rather weak ability of the government to not be bound by express fuctions gives it the power to strip-mine the "residuary sovereignty"

Doesn't sound like thinking to me.

[eno_]

OK, here's the equivalent question: Does the fact the federal goverment have some scope to act outside of expressly delagated powers enable it to remove rights from states and individuals that would otherwise be retained by them?