The Supreme Court voided a congressional enactment on the grounds that it unconstitutionally made a vague delegation of power to executive branch agencies.
In Panama Refining Co. v. Ryan
Chief Justice Charles Evans Hughes
Bowsher v. Synar
Carter v. Carter Coal Co.
Delegation of powers
Immigration and Naturalization Service v. Chadha
Mistretta v. United States
Morrison v. Olson
Rule of law
Schechter Poultry Corp. v. United States
Separation of powers