The unitary executive theory (UET) is a constitutional law ideology holding that the President of the United States possesses sole authority over the executive branch. Supporters trace the origin of this theory to debates at the Constitutional Convention of 1787, particularly the Virginia Plan, which emphasized a single executive. Supporters of the theory also point to the language of Article II, which states that "the executive power shall be vested in a President."
The most controversial aspect of the theory pertains to the President’s removal power. Under the UET, the President may remove appointed executive branch officials without approval from Congress or the courts. The U.S. Supreme Court has addressed the scope of this power in a series of cases. In Myers v. United States, 272 U.S. 52 (1926), the Court held that the President has exclusive authority to remove executive officers. Later decisions, such as Humphrey’s Executor v. United States, 295 U.S. 602 (1935), and Morrison v. Olson, 487 U.S. 654 (1988), placed limits on removal powers where Congress created independent agencies or officers with quasi-legislative or quasi-judicial functions. More recently, the Court has shifted back toward the UET theory, striking down removal protections for certain executive officials. In Seila Law LLC v. Consumer Financial Protection Bureau, 591 U.S. 197 (2020), the Court held that Congress could not insulate the Consumer Finance Protection Bureau's single director from at-will removal. In Collins v. Yellen, 594 U.S. 220 (2021), the Court similarly held that the structure of the Federal Housing Finance Agency violated the separation of powers because its single director was not removable at will by the President. In the case Trump v. Slaughter, 606 U.S. _ (2026) the Supreme Court considered the President’s removal of the Federal Trade Commission (FTC) commissioner without cause, revisiting the scope of congressional authority to insulate executive officers from at-will removal. Citing Article II, §§1 and 3, the Court held that the FTC’s requirement of for-cause removal was a violation of the separation of powers afforded by the U.S. Constitution because, in order for this position to be accountable to the President, these officers must be removable by the President. The Court further reasoned that executive officers fall below the President in the command hierarchy, and that not being removable would make them an equal to the President and not below, as the Constitution mandates.
[Last reviewed in September of 2026 by the Wex Definitions Team]