[Retric]

You can’t see internet across state lines. You can sell wheat across state lines, which seems like a major difference.

The heathcare system is another example of this. Emergency rooms in Texas are useless to people in Florida.

[pas]

Yet the ACA (Obamacare) was held constitutional due to the Commerce Clause.

Sure, if the ACA would regulate non-economic aspects of ER visits, those parts would have been likely struck down. (Unless otherwise authorized by the Constitution.)