Tennessee Code Title 4. State Government § 4-53-103

An intrastate commercial good that is produced in this state and that remains within the borders of this state is not subject to federal law or federal regulation under the authority of congress to regulate interstate commerce;  provided, that if there is not a state law or state regulation applicable to an intrastate commercial good, then such intrastate commercial good is still subject to the appropriate federal law or federal regulation, if any, on matters of public health.  It is declared by the legislature that such intrastate commercial goods have not traveled in interstate commerce and do not have a substantial effect on commerce among the states.  This section applies to an intrastate commercial good that is produced in this state from basic materials and that can be produced without the inclusion of any significant parts imported into this state.  The authority of congress to regulate interstate commerce in basic materials does not include authority to regulate intrastate commercial goods made in this state from those materials.