Because the original concept of "interstate commerce" was trade disputes among the states. Wickard that expanded that to include all commerce that may touch an

Because the original concept of "interstate commerce" was trade disputes among the states. Wickard that expanded that to include all commerce that may touch another state even indirectly was / is one of the WORST supreme court decision ever and it is eternal dream that the Supreme Court will reverse it and instantly shrink the power of federal government by at least 75%