Air Force does not equal defense.
General welfare does not mean social security.
If you read the article or documents pertaining to the constitution you will find:
"Congress has not unlimited powers to provide for the general welfare, but only those specifically enumerated."
Thomas Jefferson
"With respect to the two words ‘general welfare,' I have always regarded them as qualified by the detail of powers connected with them. To take them in a literal and unlimited sense would be a metamorphosis of the Constitution into a character which there is a host of proofs was not contemplated by its creators."
James Madison
Its really a simple concept.
Regards
J.R.
So then constitutional amendments should be required to authorize each of those?