Who Actually Runs U.S. Foreign Policy
The president leads, but Congress holds the purse and the power to declare war. How the tug-of-war works.
Foreign policy is where presidential power is at its peak — and where the checks on it are most contested.
The president as commander in chief
The president directs the military, negotiates with foreign governments, and sets the diplomatic agenda. In a crisis, the executive can act fast in ways Congress structurally cannot.
Congress holds the purse — and the war power
Only Congress can declare war and appropriate the money to wage one. Treaties require Senate ratification. In practice, presidents have stretched their authority for decades, and the boundary is a running constitutional argument.
The permanent government
Beneath the politics sits a vast apparatus — State, Defense, the intelligence community — that carries policy across administrations and shapes what's possible regardless of who's in charge.