Doctrine Quote by Richard M. Nixon

The president's powers are always open to being questioned by the co-equal branches of government.

— Ari Melber

Presidential powers are not exercised by a body or group. The Constitution vests 'all executive power' in one and only one person - the…

— William Barr

When the president acts in absence of a congressional grant of authority, he can rely only upon his own independent powers. When the president…

— Arlen Specter

The President can exercise no power which cannot be fairly and reasonably traced to some specific grant of power in the Federal Constitution or…

— William Howard Taft

The [president] has no particle of spiritual jurisdiction. . . .

— Alexander Hamilton

The president actually is there to complement the government in power. If they have done something that is not proper, it is the duty…

— Tan Cheng Bock

How exactly the obstruction-of-justice statutes interact with the president's broad powers to supervise the executive branch under Article II of the Constitution is a…

— Benjamin Wittes

“Executive power thus could be exercised adjacent to legislation without actually trespassing on legislative power. The executive, for example, could make regulations and interpretations…

— Philip Hamburger

Our Constitution wisely assigns both joint and separate roles to each branch of the government; and a President and a Congress who hold each…

— John F. Kennedy

Under Article II, all executive power is vested in one president of the United States. The regulatory state is Congress's efforts to undermine the…

— Ted Cruz

In foreign affairs, the president can do what he wants unless Congress says no. In domestic policy, the president can't do anything unless Congress…

— Bill Vaughan

There can only be one government, and the president has certain roles and duties, which are to hold the second key on money and…

— Lee Hsien Loong