[tacticalogic]

This is a case dealing with actual commerce and regulation of rail rates. This is entirely consistent with the original intent of the Commerce Clause, in that it deals with regulation required to establish an efficient infrastructure necessary for the process of commerce to take place. Find a case where Congress seeks to regulate something that is neither being bought or sold, on the grounds that it is "potentially interstate commerce" prior to the New Deal, and you'll have a case.

[robertpaulsen]

"This is a case dealing with actual commerce ... Find a case where Congress seeks to regulate something that is neither being bought or sold"

So if it is actual intrastate commerce, like drugs, you're saying that it could be regulated if it has a substantial effect on interstate commerce?