Our federal government only exists legally with enumerated and delegated powers. Who enumerated and delegated these powers? The individual states and the people did.
The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people. (9th Amendment to the US Constitution)-
The powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people. (10th Amendment to the US Constitution)"The Constitution does simply does not empower the national government to impose a mandate on the people to purchase products." ("Why We're Losing Liberty", 7 Sep 2015, Robert George, Professor of Jurisprudence at Princeton University)
Some transcription of the video.