Intrastate as well as interstate commerce. State constitutions are the supreme law within the state. 州内的和州际的贸易。州宪法是州的最高法律。
Any activity, even if purely intrastate, can be regulated by the federal government if it substantially affects interstate commerce. 任何活动,哪怕仅是州内的,只要它在实际上影响到州际的贸易,也要受到联邦政府的管理。