So, you want two things done here.
1: Private individuals private affairs monitored.
2: For the federal government to regulate intrastate commerce which they have no power to do.
Tell me, just how are you going to get that accomplished?
In either case, there is still no loophole. No matter what Wiki says or anyone else.
Legal definition of loophole Being as the federal government may not pass any laws which regulate intrastate commerce or that invade a persons right to privacy there is no loophole for the simple fact that the government has no authority to do what you want done.