affects  doctrine.Constitutional  law.  The  principle  allowing  Congress  to  regulate  intrastate

activities that have a substantial effect on interstate commerce. • The doctrine is so called because

the test is whether a given activity “affects” interstate commerce. — Also termed effects doctrine

or (erroneously) affectation doctrine. [Cases: Commerce    7(2). C.J.S. Commerce § 6.] [Blacks Law 8th]