[Hank Kerchief]

The "general welfare" clause is in the body of The Constitution, though the phrase is also in the preamble:

"Section 8 - Powers of Congress

The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States; but all Duties, Imposts and Excises shall be uniform throughout the United States;"

Hank

[Little Ray]

Okay. My bad.
Between that, the Interstate Commerce clause and a whacky USSC, there is nothing beyond the reach of the Congress...