Congress passes a law that is not clearly within the power expressly granted to it by the Constitution: it passes a law requiring individuals to purchase health insurance and it grants that passing such a law is not among the powers expressly given to it by Article I, Section 8. However, it argues, doing so it constitutional because such a health insurance mandate is a necessary and proper measure for Congress to effectively regulate interstate commerce (and more specifically, the national market in health insurance).
According to NFIB v. Sebelius, which of the following must be true of the law mandating that individuals purchase insurance in order for it to count as proper under the Necessary and Proper Clause?
