William Howard Taft,
Hallanan v. Eureka Pipe Line Company…
“ Accordingly, in so far as the decree of the circuit court enjoined collection of a privilege tax measured by intrastate commerce in oil as thus determined, it was reversed. In this court it was held that oil produced in West Virginia and constituting in fact a stream of oil flowing out of the state was interstate commerce, even though those who delivered the oil to the company for transportation might have diverted it from the interstate commerce stream, and though in comparatively small quantities some oil was thus diverted. ”
