"The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
Quit going outside your boundaries.
Your powers are:
Collect taxes
Regulate interstate commerce
Coin money, regulate currency, set standards of weights and measures
Declare war
Raise and maintain an army and navy
You may only make laws necessary and proper to carry out the these powers.