[robertpaulsen]

"they were making SOME interstate regulatory efforts less effective."

Not constitutionally, they weren't. You say "some". Can you give me one example where intrastate activity has a substantial effect on regulated interstate commerce and the USSC has ruled that this activity will be allowed?

[Know your rights]

Can you give me one example where intrastate activity has a substantial effect on regulated interstate commerce and the USSC has ruled that this activity will be allowed?

Prior to the FDR court there was no "substantial effect" test.