U.S. government (executive branch)

Overview

The executive branch is the arm of the U.S. federal government that carries out and enforces the law. Article II of the Constitution vests its power in a single person — the President of the United States, who serves as both head of state and head of government and as Commander-in-Chief of the armed forces (The White House). The President is responsible for implementing and enforcing the laws written by Congress, and to that end appoints the heads of the federal agencies, including the Cabinet (The White House). Counting the armed forces, the branch employs more than 4 million Americans (The White House).

In June 2026 the branch exercised that enforcement power in a way without precedent: an export-control directive from the Commerce Department forced Anthropic to switch off its two most capable AI models — Fable 5 and Mythos 5 — for every user on earth (Anthropic).

How the branch is organized

Fifteen executive departments, each led by a presidential appointee confirmed by the Senate, carry out the day-to-day administration of the federal government (The White House). They are joined by other executive agencies such as the CIA and the Environmental Protection Agency, whose leaders sit outside the Cabinet but under the President’s full authority (The White House). The President also appoints the heads of more than 50 independent federal commissions — the Federal Reserve Board and the Securities and Exchange Commission among them — as well as federal judges, ambassadors and other officials (The White House).

The Vice President belongs to the branch too, ready to assume the presidency if the President cannot serve, and serving as president of the Senate with a tie-breaking vote (The White House). The Cabinet itself is an advisory body of the 15 department heads; all take the title of Secretary except the head of the Justice Department, who is called Attorney General (The White House). After the Vice President, the Speaker of the House and the Senate president pro tempore, the Cabinet offices continue the presidential line of succession in the order their departments were created (The White House).

The Executive Office of the President — the White House staff, the Office of Management and Budget, the National Security Council and the U.S. Trade Representative among others — was created in 1939 by President Franklin D. Roosevelt to give the chief executive the support needed to govern (The White House).

The President’s formal powers include signing legislation or vetoing it (Congress can override with two-thirds of both houses), conducting diplomacy and signing treaties subject to two-thirds Senate ratification, issuing executive orders that direct executive officers or clarify existing laws, and extending pardons and clemencies for federal crimes except in cases of impeachment (The White House). The Constitution also requires the President to report to Congress on the State of the Union — traditionally delivered as an address to a joint session each January (The White House).

The June 2026 export-control directive

The sequence began with a voluntary step. On June 2, 2026, President Trump signed Executive Order 14409, directing agencies to design a voluntary framework for frontier AI models that could give the government up to 30 days of access before a model reached other trusted partners; the order authorized no mandatory licensing, preclearance or permitting (NeoTeo).

A week later Anthropic released the models the order had anticipated. Fable 5 went out for general use on June 9, while Mythos 5 stayed restricted to trusted Project Glasswing partners working on defensive cybersecurity (NeoTeo; 9to5Mac).

Then, on June 12 at 5:21 PM Eastern, the directive arrived. Commerce Secretary Howard Lutnick sent a letter to Anthropic CEO Dario Amodei placing Fable 5 and Mythos 5 under export controls: no foreign national, whether inside or outside the United States — including foreign-national Anthropic employees — could access either model (Anthropic; 9to5Mac). Under the directive a license would be required for the export, re-export or domestic transfer of the models (9to5Mac). Because Anthropic said it had no reliable way to verify users’ nationality in real time, the only compliant path was to disable both models for all customers worldwide; every other Anthropic model stayed online (Anthropic).

The government’s stated basis was a jailbreak claim: it believed it had found a method of bypassing Fable 5’s safeguards. Anthropic said the letter gave no specific details of the national security concern, and that the demonstration it reviewed showed the technique being used to identify a small number of previously known, minor vulnerabilities — findings it said other publicly available models could reproduce without any bypass (Anthropic). Axios reported that the company which flagged the jailbreak to the Commerce Department was Amazon, Anthropic’s own investor and cloud partner, and that the administration had previously tried and failed to stop Anthropic from releasing the models (9to5Mac).

Anthropic complied while publicly disagreeing. It described its defense-in-depth posture — safeguards red-teamed for thousands of hours with the U.S. government, the UK AI Security Institute and private testers, with no universal jailbreak found — and argued that a narrow, non-universal jailbreak should not cause the recall of a commercial model used by hundreds of millions of people (Anthropic). The company said it viewed the action as a misunderstanding and worked to restore access (Anthropic).

Restoration came in stages. Controls on Mythos 5 were lifted on June 26, 2026, with access returning for a set of U.S. organizations; Fable 5’s controls were lifted on June 30, with global access restored on July 1 — 19 days after the shutdown (NeoTeo).

What this profile does not claim

This profile does not describe the legal mechanics of the “deemed export” rule said to underlie the directive, since no full-read source confirmed them. It does not give a current workforce figure beyond the White House’s published “more than 4 million.” It does not quote Anthropic’s chief executive on the directive beyond the verified fact that he received the Commerce letter, and it does not claim the directive was ever challenged in court. The UK AI Security Institute’s evaluation figures are reported as NeoTeo described them; the underlying test reports were not independently reviewed. Nothing here takes a position on whether the directive was justified — it reports what the government did, what Anthropic said, and what the cited outlets reported.