The compact and the foreign power

The Hill reports that President Trump's initial efforts to sell his Iran agreement — covering an end to hostilities, a pledge against nuclear weapons, and a $300 billion redevelopment package — failed to win over many members of his own party in the Senate. That resistance, whatever its partisan coloring, is precisely the institutional friction the Constitution was designed to produce.

The framers' structural logic. Article II, Section 2 of the Constitution is unambiguous: the President shall have power, by and with the advice and consent of the Senate, to make treaties, provided two-thirds of the Senators present concur. That supermajority requirement was not an accident. The convention understood that a single executive, however talented or well-intentioned, carries with him the temptations of personal glory and the pressures of the moment. A two-thirds threshold forces the executive to persuade — to build, in effect, a coalition that mirrors the extended republic itself.

The memorandum question. The BBC describes this instrument as a fourteen-paragraph memorandum, not a treaty submitted for ratification. Whether a president may bind the nation to arrangements of this magnitude — ending a conflict, restructuring a regional economy, foreclosing a nuclear path — through executive memorandum rather than treaty is a structural question of the first order. I would ask: if the arrangement is merely advisory, what is its force? And if it has binding force, how is it not a treaty in substance, whatever its label? The label does not change the constitutional weight.

Faction as a safeguard, not an embarrassment. The Hill notes that GOP critics are not buying the sales pitch. Some commentators will read this as partisan dysfunction. I read it as the separation of powers working as intended. In Federalist No. 51, I argued that the great security against a gradual concentration of power in any single department lies in giving each branch the means and motive to resist the others. Senatorial skepticism — even inconvenient, even fractious — is that motive in operation. A Senate that ratifies whatever the executive negotiates is no check at all.

The danger of the precedent. My deeper concern — and here I mark this as inference, not recollection of modern events — is cumulative. Each time an executive reaches a transformative foreign arrangement by memorandum rather than by treaty, the treaty power atrophies a little further. Future executives, of any party, inherit the expanded precedent. The Constitution does not repair itself; only the branches, or ultimately the people through amendment, can restore a boundary once it has eroded by neglect.

The structural question. Does the proposed arrangement strengthen or weaken the balance? A durable peace with Iran, if it can be had, is a good worth pursuing. But the mechanism matters as much as the outcome. A peace ratified by two-thirds of the Senate carries the republic's collective judgment and is therefore more stable, more legitimate, and more resistant to reversal by the next administration. A peace resting on a presidential memorandum is as fragile as the tenure of the man who signed it. The senators who are asking hard questions are, in this structural sense, doing exactly what the compact requires of them.