"The Necessary and Proper Clause “empowers Congress to enact laws in effectuation of its [commerce] powe[r] that are not within its authority to enact in isolation.” Raich, 545 U. S., at 39 (Scalia, J., concurring in judgment). Hence, “[a] complex regulatory program … can survive a Commerce Clause challenge without a showing that every single facet of the program is independently and directly related to a valid congressional goal.” Indiana, 452 U. S., at 329, n. 17. “It is enough that the challenged provisions are an integral part of the regulatory program and that the regulatory scheme when considered as a whole satisfies this test.” Ibid. (collecting cases). See also Raich, 545 U. S., at 24–25 (A challenged statutory provision fits within Congress’ commerce authority if it is an “essential par[t] of a larger regulation of economic activity,” such that, in the absence of the provision, “the regulatory scheme could be undercut.” (quoting Lopez, 514 U. S., at 561)); Raich, 545 U. S., at 37 (Scalia, J., concurring in judgment) (“Congress may regulate even noneconomic local activity if that regulation is a necessary part of a more general regulation of interstate commerce. The relevant question is simply whether the means chosen are ‘reasonably adapted’ to the attainment of a legitimate end under the commerce power."