Commerce
what are some examples of instrumentalities and channels?
railroads, highways, city streets, telephone, gas, and electric systems
What do instrumentalities and channels do?
serve as the media for the movement of goods and persons in interstate commerce
What is commerce?
the activity of buying and selling, especially on a large scale
what are some activities that substantially affect interstate commerce?
they must be economic or commercial activities
what do these activities include?
interstate activities whose aggregate effect would substantially affect the interstate market of the product