Last reviewed: 2026-07-20.

Immigration headlines move fast, but the word "new rule" in a news story can mean six very different legal things — each with a different reach, speed, and durability. Employers planning hiring, HR teams advising staff, and affected individuals all make better decisions when they can tell whether a change is a binding regulation that survives a change of administration or a memo that a court could set aside next week. This explainer maps the instruments so you can find and read the primary document behind any headline.

The hierarchy: statute, regulation, and everything below

US immigration rests on a layered structure. At the top sits the statute — the Immigration and Nationality Act (INA) of 1952, as amended. The main statute governing immigration law is the Immigration and Nationality Act of 1952, as amended, and its current text is codified in Title 8 of the U.S. Code, "Aliens and Nationality." Only Congress can change a statute. That makes statutory features — like the H-1B cap structure — the most stable elements in the system.

Below statute sit regulations (also called "rules"). Congress delegates authority to agencies to fill in operational detail. Typically, statutes provide general goals and guidelines, and the related regulations specify the practical details. Immigration regulations live mostly in Title 8 of the Code of Federal Regulations (CFR) for DHS/USCIS, and in Title 22 for the State Department's visa work. Title 22 of the CFR is the administrative law that further interprets and defines, via rules published by the Office of the Federal Register, the powers and responsibilities given to the Department by Congress; Chapter I, Subchapter E governs the Department's visa operations.

A key reading skill: statutes (U.S. Code) and regulations (CFR) look similar but are different sources. When researching online, a statute created by Congress can look very similar to a regulation created by an agency, so be careful to distinguish whether you are looking at the United States Code (statutes) or the Code of Federal Regulations (regulations).

How a regulation is made — and why it's slow

Regulations carry the force of law but take time to create because of a process set by the Administrative Procedure Act (APA). Most regulations are created via a rulemaking procedure described in §553 of the APA that is referred to as "informal rulemaking" or "notice-and-comment rulemaking." The core steps are notice, comment, and a final rule. An agency must publish a notice of its intent to create or amend a regulation; this notice is published in the Federal Register, the daily publication for Rules, Proposed Rules, and Notices of the Federal Government. That notice is the NPRM (Notice of Proposed Rulemaking). Interested parties are invited to comment on the proposed rule, and comments are most often submitted through regulations.gov.

After comments close, the agency must publish a final rule. The agency must publish a Notice of Final Rulemaking in the Federal Register, which must again state the reasons for the rule and respond to comments received during the public comment period. Only then is the text codified. Once a final rule is published in the Federal Register, the Office of the Federal Register and the Government Publishing Office process the new regulations to codify them, organized by agency and subject into titles in the CFR, subdivided into parts and sections. To trace any regulation back to its origin, read the source note. Look at the text of the rule in the CFR; at the end, the source or credit section provides a chronological list of Federal Register citations for when the rule was first published and every time it was amended.

There are faster tracks. When an agency issues a rule without first publishing a proposed rule, it often characterizes the rule as an "interim final rule," which becomes effective immediately upon publication. An agency may skip notice-and-comment only under limited exceptions, and even a final legislative rule usually carries a delay before it binds. Legislative rules generally become effective at least 30 days after they are published in the Federal Register, allowing affected parties time to come into compliance.

Guidance: policy manuals and memos (fast, but weaker)

Below regulations sit agency guidance documents — the fastest-changing layer. These include the USCIS Policy Manual and policy memoranda. Their defining trait: they do not go through rulemaking. Guidance documents do not contain amendments to the CFR and are not subject to the notice and comment process.

The USCIS Policy Manual is the agency's consolidated guidance for adjudicators. The Policy Manual is to be followed by all USCIS officers in the performance of their duties but it does not remove their discretion in making adjudicatory decisions, and it does not create any substantive or procedural right or benefit that is legally enforceable. Read that carefully: it binds officers internally, but it is not a source of enforceable rights against the government the way a statute or regulation can be. It changes frequently. The Policy Manual is frequently updated through "Policy Alerts" to reflect new laws, court rulings, and administration priorities, making it crucial to check for the latest version.

The State Department's counterpart for consular officers is the Foreign Affairs Manual (FAM), Volume 9 for visas. The FAM contains directives and guidance for Department of State personnel based on statutes, regulations, Executive Orders, Presidential directives, and other sources; 9 FAM deals exclusively with the adjudication of U.S. visas. The FAM interprets law; it does not replace it. The Department issues 9 FAM as the binding instruction set for its consular officers, but while the INA is the primary statute, 9 FAM represents the Department's official interpretation and procedural requirements for implementing that law.

Guidance can be quietly powerful. A memo that halts adjudications can have real legal consequences even though it never went through rulemaking — which is exactly why such memos are litigated (see below).

Executive orders and proclamations

The President acts through executive orders (EOs) and proclamations, published in the Federal Register. The Presidential Documents section of the Federal Register contains documents signed by the President, including Proclamations and Executive Orders, as well as determinations, letters, memorandums, and reorganization plans. In immigration, the most-invoked authority is INA § 212(f). As codified in 8 U.S.C. § 1182(f), the section provides that whenever the President finds that the entry of any class of aliens would be detrimental to the interests of the United States, he may by proclamation suspend their entry or impose restrictions he deems appropriate. That power is broad but not unlimited. INA § 212(f) does not allow the president to interfere with or subvert other parts of the INA or other federal laws, including INA § 208, which grants people the right to seek asylum.

A presidential action often triggers downstream instruments — delegations, memos, and rules — that actually operationalize it. For example, a 2024 border proclamation under § 212(f) and § 215(a) directed DHS and DOJ to issue regulations, which they did through an interim final rule. On June 3, 2024, the President signed a Proclamation under sections 212(f) and 215(a) suspending and limiting the entry of certain noncitizens and directing DHS and DOJ to consider issuing regulations; the Departments then issued an interim final rule.

Courts: injunctions and vacatur

Courts can stop or erase government action, and the type of remedy determines the reach. The APA authorizes courts to review agency action and set aside what is unlawful. The APA governs how agencies create and justify regulations and gives courts the power to "hold unlawful and set aside" agency actions that are arbitrary, exceed statutory authority, or violate procedural rules; that "set aside" language is what enables nationwide vacatur.

Two mechanisms differ sharply. An injunction blocks enforcement, often only against named parties; a vacatur erases the rule itself. Vacatur allows courts to set aside unlawful agency rules altogether; that remedy doesn't just protect the parties — it erases the rule itself. This distinction became more consequential in 2025. On June 27, 2025, the Supreme Court issued its decision in Trump v. CASA, Inc., imposing new legal limits on nationwide injunctions — judicial orders that prevent the federal government from implementing challenged policies against all relevant persons and entities. Notably, that decision left APA vacatur open. A vacatur operates on the rule itself rather than on named parties, so its practical effect is nationwide — a distinction that carries weight after Trump v. CASA, which curtailed the universal injunction while expressly reserving whether APA vacatur is subject to the same limitation.

A 2026 example shows how guidance and courts interact: USCIS issued policy memoranda pausing certain adjudications, and a federal court set them aside under the APA. Following the APA's directive that courts "set aside" unlawful agency action, the court vacated the policies nationwide; vacatur renders those policies legally void and prevents USCIS from applying them going forward. A pending appeal does not automatically restore a vacated policy. On the stay question, a notice of appeal does not, standing alone, suspend a vacatur, and the district court declined to treat its order as anything other than presently effective.

Where labor and wage rules live

For employment-based cases, the Department of Labor (DOL) runs a parallel track through its Office of Foreign Labor Certification (OFLC), using the online FLAG portal. A permanent labor certification issued by DOL allows an employer to hire a foreign worker permanently; in most instances, before the employer can file an immigration petition with USCIS, it must obtain a certified labor certification from DOL. DOL's own rulemaking flows through the same Federal Register process — for instance, a 2026 proposal to change prevailing-wage computation. DOL issued an NPRM to revise ETA regulations governing prevailing wages for EB-2 and EB-3 immigrant visas via the PERM program and for H-1B, H-1B1, and E-3 nonimmigrant visas. The recruitment and wage mechanics themselves are set in regulation. The standards and procedures governing the prevailing-wage determination process for the permanent labor certification program are set forth in the Department's regulations at 20 CFR 656.40 and 656.41.

How to read a headline in practice

1. Identify the instrument. Is the story about a statute, a Federal Register rule, a Policy Manual/FAM update, a memo, an EO/proclamation, or a court order? Each has a different binding force. 2. Find the primary document. For rules, EOs, and proclamations, go to the Federal Register; for codified regulations, the CFR/eCFR; for adjudication guidance, the USCIS Policy Manual or 9 FAM. 3. Check durability. Statutes change slowest; regulations require rulemaking to undo; guidance and memos can change or be litigated quickly. 4. Confirm current values at the source. Fees, caps, wage tables, and processing times are volatile — read the number off the official page, not a headline.

Key terms

- INA: The Immigration and Nationality Act; the governing statute, codified in Title 8 of the U.S. Code. - CFR: Code of Federal Regulations; codified agency rules (immigration mainly in Title 8; State visas in Title 22). - Federal Register: The official publication, published every business day since 1936, for rules, proposed rules, and notices of federal agencies.

  • NPRM: Notice of Proposed Rulemaking; the proposed-rule stage that opens public comment.
  • IFR: Interim final rule; a rule effective immediately, often without prior notice-and-comment.
  • USCIS Policy Manual: USCIS's consolidated adjudication guidance; binds officers but creates no enforceable rights.
  • FAM (9 FAM): State Department guidance for consular visa adjudication.
  • EO / Proclamation: Presidential documents published in the Federal Register; § 212(f) is the common entry-suspension authority.
  • Vacatur: An APA remedy that sets aside and voids an unlawful rule, with nationwide practical effect.
  • Injunction: A court order blocking enforcement, which after Trump v. CASA is often limited to named parties.

Primary sources

  • USCIS Policy Manual — https://www.uscis.gov/policy-manual — USCIS's binding internal adjudication guidance and Policy Alerts.
  • Federal Register — https://www.federalregister.gov — official daily publication of proposed rules, final rules, notices, and presidential documents.
  • eCFR — https://www.ecfr.gov — continuously updated electronic version of the codified Code of Federal Regulations.
  • 9 FAM (Foreign Affairs Manual) — https://fam.state.gov/Volumes/Details/09FAM — State Department visa-adjudication guidance for consular officers.
  • DOL OFLC / FLAG — https://flag.dol.gov — labor certification (PERM), prevailing wage, and LCA filing portal and program pages.
  • Prevailing Wage (DOL ETA) — https://www.dol.gov/agencies/eta/foreign-labor/wages — prevailing-wage program rules and current wage data.
  • Regulations.gov — https://www.regulations.gov — where the public files comments and reads rulemaking dockets.
  • USCIS Newsroom Alerts — https://www.uscis.gov/newsroom/alerts — where USCIS posts responses to court orders and implementation notices.

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This explainer is informational only and is not legal advice. Immigration law is fact-specific and changes; consult a licensed immigration attorney about any specific situation, and verify current rules against the linked official sources.