Foreign affairs powers are split between the branches. The President is Commander in Chief, makes treaties (with two-thirds of the Senate), appoints and receives ambassadors. Congress regulates foreign commerce, declares war, raises armies, funds everything and defines offenses against the law of nations. Youngstown's zones apply here too, but the Court has often given the President more room abroad than at home.
Why it works
Why give the President more room in foreign affairs? A single executive brings what Hamilton called "Decision, activity, secrecy, and despatch" (Federalist No. 70), and the nation must speak with one voice abroad. But the Constitution gives Congress major foreign powers, and the framers deliberately gave the war-declaring power to Congress. So the modern cases tend to ask whether Congress agreed, stayed silent or disagreed, and whether the Constitution gives the President a specific power that Congress cannot take away.
Key idea
United States v. Curtiss-Wright (1936) described broad presidential power in foreign affairs; Dames & Moore v. Regan (1981) upheld executive agreements settling the Iran hostage claims; Zivotofsky v. Kerry (2015) held the power to recognize foreign governments belongs to the President alone.
Worked example: Dames & Moore v. Regan (1981)
To end the Iran hostage crisis in January 1981, the President agreed with Iran to end American lawsuits against Iran and send the claims to an international tribunal. A company with a claim challenged the agreement. How did the Court analyze it?
- For nullifying attachments of Iranian assets, a statute (IEEPA) gave the President authority: zone 1.
- For suspending the claims themselves, no statute directly authorized it, but Congress had long accepted executive claims settlements and had not objected here: zone 2, with congressional acquiescence.
- The Court stressed that its decision was narrow and tied to that history.
Answer: Upheld, using Youngstown's framework and long congressional acquiescence.
Worked example: Recognition versus the rest
After Zivotofsky, can Congress refuse to fund an embassy in a country the President has recognized?
- Zivotofsky held only that the formal act of recognition is the President's alone.
- The Court said Congress keeps broad powers over foreign affairs, including funding, trade and war.
- Congress could decline funding; it could not make the President issue a formal statement contradicting recognition.
Answer: Probably yes. The recognition holding is narrow.
Common mistake
Thinking the President controls all foreign affairs. Congress regulates foreign commerce, declares war, funds the government and (through the Senate) approves treaties; Zivotofsky rested on the specific recognition power. Medellín v. Texas (2008) also held the President could not by himself make a non-self-executing treaty obligation binding on state courts. Check: is the President relying on a specific Article II power, or acting against Congress?
This is an educational course, not legal advice.