Rep. Clyburn, like many of his colleagues, seems to have conveniently forgotten that the federal government has only specific enumerated powers. He also seems to have overlooked the Ninth and 10th Amendments, which limit Congress's powers only to those granted in the Constitution.
One of those powers—the power "to regulate" interstate commerce—is the favorite hook on which Congress hangs its hat in order to justify the regulation of anything it wants to control.
The same Congress that wants to tell family farmers what to grow in their backyards has declined "to keep regular" the commercial sale of insurance policies. It has permitted all 50 states to erect the type of barriers that the Commerce Clause was written precisely to tear down. Insurers are barred from selling policies to people in another state.
That's right: Congress refuses to keep commerce regular when the commercial activity is the sale of insurance, but claims it can regulate the removal of a person's appendix because that constitutes interstate commerce.