What is the difference between an executive order and a presidential memorandum? Both are written presidential directions to the executive branch with the force of law within the administration; the difference is formal. Executive orders are numbered sequentially, signed, and published in the Federal Register's Title 3 compilations; memoranda may be published or not, and proclamations — the third form — typically announce ceremonial or treaty-related matters to the public at large. None of the three can create law binding private parties beyond what a statute already authorizes; each draws its validity from a statute or the Constitution, and each is reviewable in court as final agency action when it has legal effect, per the Federal Register Act's publication framework and settled administrative law.
Where does the power come from?
Article II's vesting and take-care clauses, plus specific statutes that delegate rulemaking or administrative authority to the president. An order directing agencies to regulate under existing statutes is strong; an order contradicting a statute is void — as courts have held across administrations, from Truman's steel-seizure order struck in Youngstown (1952) to modern immigration and spending orders partially enjoined on statutory grounds. The Youngstown framework — Justice Jackson's triad of maximum, moderate and lowest presidential power — remains the analytic lens courts apply.
What do the documents actually contain?
- Executive order: numbered, cites authority, sets policy, assigns implementing agencies and deadlines; published, so judicially noticeable.
- Memorandum: same potential content, lighter formality — used for guidance to agencies, delegations, study directives; publication optional but now routine for major ones.
- Proclamation: addressed to the public — flags at half-staff, national observances, and legally operative ones like tariff proclamations under trade statutes.
Why the count comparisons mislead
Commentators count each president's orders as a measure of unilateral ambition, but the totals mix routine housekeeping with landmark policy, and presidents game the metric by using memoranda for what predecessors did by order. The meaningful question for any single document is not its label but its cited authority: an order under an express statutory delegation (trade actions under Section 232, national-emergency powers under the NEA) stands on different ground from a bare policy directive an agency must implement through its own rulemaking.
How are they undone?
Four ways: revocation or supersession by a later president — routine on Inauguration Day; expiration of an underlying statutory delegation or emergency declaration; judicial invalidation; or congressional override where the order implements a statute (a statute trumps the order). The Congressional Review Act reaches orders that qualify as rules under its definitions, a category litigated case by case.
Why agencies still must act through rulemaking
An order can order a rulemaking; it rarely substitutes for one. Where the underlying statute requires notice-and-comment procedures, the order sets the destination and the APA sets the road — which is why the measurable output of any «executive action day» is not the signing ceremony but the dockets that follow.
FAQ
Can an executive order change a law?
No — it can direct implementation of existing law or regulate the executive branch; conflicting provisions are unenforceable.
Are memoranda published?
Optional historically, but major memoranda are now published in the Federal Register alongside orders.
How fast can a successor revoke an order?
Immediately, by order — incoming presidents routinely revoke predecessors' orders on day one.
For more context, read How a Federal Rule Gets Written: The Comment Period Explained.
For more context, read tariff authority.
For more context, read How Congress Kills a Federal Rule in 60 Days.