What is the nature of this government? It is emphatically federal, vested with an aggregate of special powers for general purposes, conceded by existing sovereignties, who have themselves retained what is not so conceded. It is said that there are cases in which it must act on implied powers. This is not controverted, but the implication must be necessary, and obviously flow from enumerated power with which it is allied.

Speech in the Senate on the National Bank Charter (February 11, 1811).