It's pretty obvious. The scope of the power "to provide for the general welfare" is limited by, and does not expand upon, those authorized by Article I Section 8 in the Constitution.
Why are you being so sanctimonious about it?
Aided by a little sophistry on the words "general welfare," [the federal branch claim] a right to do not only the acts to effect that which are specifically enumerated and permitted, but whatsoever they shall think or pretend will be for the general welfare. --Thomas Jefferson to William Branch Giles, 1825. ME 16:147
“Why are you being so sanctimonious about it?”
I’m being calm and patient, while I wait for you to understand that there is a difference between excess and the proper exercise of power.