certain POWERS were specifically CEDED to the central government by the STATES (which can be "taken back" by the states, too!!)and it was INTENDED that the federal government could/WOULD do NOTHING MORE than that limited amount of things.
NOTE: i suspect there would have been a LOT less POWERS ceded, had the states recognized how powerful, INTRUSIVE & "NOSEY" the fed would become!
free dixie,sw
And which one of those POWERS specifically authorizes the federal government to have branch of the military called a U.S. Air Force?