Although the Constitution contains no explicit prohibition against Congress delegating its legislative powers (to the President or an administrative agency, for example), the principle of non-delegation is fundamental to the idea of a limited government accountable to the people. Indeed, the people, in whom sovereignty ultimately resides, carefully assign certain powers to each branch of government. The delegated powers are defined as placed in distinct branches of government for the “accumulation of all powers, legislative, executive, and judiciary, in the same hands,” writes James Madison in Federalist No. 47, “may justly be pronounced the very definition of tyranny.” While the executive must exercise some discretion in the application of law, lawmaking remains the prerogative of Congress. Since the New Deal, the Supreme Court has unfortunately sanctioned ever greater delegations of legislative power to administrative agencies. That the courts have flouted this principle does not mean that Congress can or should ignore this element of constitutional construction.

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