# Necessary and Proper Clause **Status: stub — expand.** Article I, § 8, cl. 18 — Congress may "make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers." It is the hinge on which every implied federal power turns. [[McCulloch v. Maryland]] (1819) read "necessary" as *convenient or useful*, not *indispensable*: "Let the end be legitimate... and all means which are appropriate, which are plainly adapted to that end... are constitutional." That reading is what makes an enumerated-powers government capable of running a modern administrative state. The clause confers no independent power — it attaches to some other enumerated grant. [[NFIB v. Sebelius]] (2012) enforced that limit, holding that the individual mandate could not be justified as "proper" because it was not incidental to an enumerated power but "a substantial expansion of federal authority." ## See also - [[Commerce Clause]] · [[Spending Clause]] · [[Tenth Amendment]] - [[Federalism]] · [[Federalism Powers Crosswalk]]