A plain-English field guide · Updated September 15, 2026
It is not one line, one agency or even one system. It is a stack of statutes, visa categories, quotas, consulates, benefit agencies, border officers and courts—each answering a different question.
ONE PERSON · MANY GATES
The shortest accurate answer
01 / The machinery
The agency depends on the action. Click one to see what it actually controls.
Department of Homeland Security
A State Department visa generally lets someone travel to a port and ask to enter. CBP decides admission. The I-94 or other status record controls the authorized stay. A green card is permanent-resident status, not a temporary visa.
02 / Legal pathways
There is no universal application to “immigrate legally.” A person must fit a category Congress created—and many people fit none.
SIMPLIFIED ROUTE FINDER
Immediate relatives of citizens are not numerically capped; preference categories often wait.
A permanent-residence route
Educational, not a case screener. Real eligibility turns on detailed facts, dates, status history, nationality, criminal and immigration records, and frequently changing law.
03 / The status ladder
Temporary / nonimmigrant
Lawful permanent resident
U.S. citizen
Most temporary categories are designed for a limited stay. Some—especially H-1B and L—allow a person to hold temporary status while also pursuing permanent residence. Others can be jeopardized if officials believe the applicant secretly intends to remain.
04 / Quotas and queues
Congress caps many family and employment categories and limits preference visas chargeable to any one country. Demand, unused-number rules and monthly cutoffs turn statutes into queues.
QUEUE MECHANICS — ILLUSTRATIVE, NOT A FORECAST
Demand ÷ annual supply = 4.3 annual cohorts to clear if nothing else changed.
Priority date: your place in line. Final Action Date: which priority dates can receive a visa now. Retrogression: the cutoff moves backward when demand outruns the available numbers.
05 / Protection
REFUGEE
ASYLUM
OTHER PROTECTIONS
06 / Enforcement and removal
Removal proceedings are administrative civil cases. There is no general government-paid lawyer, even though detention, family separation and expulsion may be at stake.
CBP, ICE or USCIS identifies a possible violation or inadmissibility issue.
DHS alleges removability, usually through a Notice to Appear filed with EOIR.
The person may contest the charges and seek relief such as asylum, cancellation or adjustment.
The BIA and sometimes federal courts review limited issues; DHS executes a final order.
07 / Recent changes
This ledger distinguishes rules in force, scheduled rules, presidential restrictions and operational changes. Litigation and implementation can change the practical result.
A $4,000 H-1B or $4,500 L-1 fee will apply through September 30, 2027 to more extension-of-status petitions filed by employers with at least 50 U.S. employees and a workforce that is more than 50% H-1B or L-1. Amended petitions that do not seek an extension are exempt; the rule does not apply to every employer or every petition.
The State Department says applicants may still submit applications and attend interviews, but consular officers may not issue diversity visas while the pause remains in effect. The guidance states that there are no exceptions.
The State Department says the January 2026 pause for nationals of 75 countries is no longer in effect because of a federal court order. Applicants may proceed, but other eligibility, security and nationality-based restrictions still apply.
The State Department told Reuters that embassies and consulates were adjusting immigrant-visa appointments during global officer training focused on public-charge screening. This concerns immigrant-visa appointments abroad—not every visa, petition, or USCIS filing.
DHS rescinded the 2022 regulatory framework. For covered admission and adjustment cases filed on or after the effective date, officers regain broader case-by-case discretion and may consider more means-tested benefits and relevant circumstances.
A federal judge issued a preliminary injunction one day before the rule was due to take effect. The longstanding “duration of status” framework therefore remains in place for now. The order is temporary while the case continues, and the government may appeal.
USCIS may send certain cases directly to immigration court without first interviewing the applicant. USCIS still interviews before granting or denying asylum itself; a referral is not itself a final denial.
DHS codified fees created by the 2025 reconciliation law, including a nonwaivable $100 asylum filing fee and other application-related fees. The rule also changes when some employment authorization ends.
The State Department says visa issuance is fully suspended for nationals of 19 countries and partially suspended for nationals of 20 more, plus certain Palestinian Authority travel documents, subject to category-specific exceptions.
The National Visa Center generally schedules immigrant-visa applicants in the consular district for their residence, or in their country of nationality if requested, with limited exceptions and designated posts where routine services are unavailable.
The Department of State has now published separate guidance ending the 75-country immigrant-visa pause and pausing diversity-visa issuance. Those changes do not override other statutory, security, public-charge or nationality-based restrictions.
08 / Reform
Speed, control, family unity, labor demand, humanitarian protection, fiscal cost and due process can reinforce one another—but sometimes conflict. Serious proposals name the tradeoffs.
Congress
Congress + executive
Congress
Mostly Congress
Congress
Agencies + Congress
REFORM LAB · DIRECTIONAL THOUGHT EXPERIMENT
Directional profile
09 / Plain English
Applying for a green card from inside the United States without leaving for consular processing.
Additional review after a consular interview. A case may be neither finally approved nor finally denied while checks continue.
The legal decision by CBP to let a person enter the United States in a particular status. A visa is not admission.
A word used in federal statutes for a person who is not a U.S. citizen or national. This report usually says “noncitizen” except when explaining source language.
A unique registration number assigned to many noncitizens in U.S. immigration records.
The person who would receive the immigration benefit requested by a petition.
Completing an immigrant-visa case at a U.S. embassy or consulate outside the United States.
Deferred Action for Childhood Arrivals. A revocable exercise of enforcement discretion plus possible work authorization; it is not a visa or green card.
A spouse or child who can receive status through the principal applicant in categories that permit it.
Employment Authorization Document—a work permit. It is evidence of permission to work, not necessarily a separate immigration status.
Lawful permanent residence: permission to live and work permanently in the U.S., subject to abandonment and removal rules.
Immigration and Nationality Act, the core federal immigration statute. Congress has amended it many times since 1952.
Legally barred from admission or certain benefits because a ground applies—such as specified health, crime, fraud, security, or public-charge grounds—unless an exception or waiver is available.
A person admitted temporarily in a category such as visitor, student, or temporary worker. It describes legal purpose, not a judgment about long-term hopes.
Notice to Appear, the charging document that begins a removal case once filed with immigration court.
Case-by-case permission to enter or remain temporarily for urgent humanitarian reasons or significant public benefit. It is not formal admission.
The person or organization asking the government to classify someone for an immigration benefit; sometimes the applicant can self-petition.
A case's place in a numerically limited visa line, usually based on when a qualifying petition or labor certification was filed.
A statutory ground that can make some applicants inadmissible if officials conclude they are likely to become dependent on government support under the governing standard.
Request for Evidence: USCIS asks for missing or additional proof before deciding. It is not a denial.
The legal category and conditions governing a person's stay after admission or an approved change/adjustment.
A travel document issued by the State Department that lets a person ask CBP for entry. It does not guarantee admission or dictate the full authorized stay.
The State Department's monthly chart showing which priority dates may move forward in capped family and employment categories.
Legal forgiveness of a specific inadmissibility ground when the statute permits it and the applicant meets the waiver test.
10 / Frequently asked
A visa is generally used to travel to a U.S. port of entry. Status is the legal category governing a person's stay after admission or an approved change. A green card is evidence of lawful permanent residence. The visa expiration date and the authorized-stay date are not necessarily the same.
No. Most people need a qualifying relationship, job, achievement, investment, humanitarian claim, or other statutory category before there is a line to enter. Many people have no available category at all; others qualify but face numerical backlogs.
No. A bona fide marriage may support a green-card case. The government still checks eligibility and the legitimacy of the relationship. Citizenship usually comes later through a separate naturalization process.
Not automatically. Some timely filings authorize continued stay, some create a period of authorized presence, and some do neither. Work permission is also separate. The answer depends on the filing and the person's existing status.
No. Immigration courts are administrative courts within the Department of Justice. Their decisions can often be appealed to the Board of Immigration Appeals and then, on limited legal questions, to federal courts.
Both protect people who meet the refugee definition. Refugees are generally processed before entering the United States; asylum applicants seek protection while present in the U.S. or at its border. Procedures, annual planning and access rules differ.
Improper entry can be prosecuted as a federal misdemeanor and reentry after removal can be a felony. Merely remaining after authorized stay is generally a civil immigration violation, though it can trigger removal and future bars.
No. Congress writes the statutes and numerical architecture. The executive has substantial power over enforcement priorities, vetting, parole, refugee admissions, regulations and foreign affairs, but agency actions remain subject to statutes, procedure and judicial review.
11 / Methodology and sources
Statutes set the architecture; regulations implement it; agency pages describe current procedure; court decisions can block or reinterpret policy; operational news may arrive before public guidance.
USCIS
USCIS
USCIS
Department of State
DHS OHSS
USCIS
USCIS
DOJ EOIR
DOJ EOIR
Federal Register
Federal Register
U.S. District Court for the District of Massachusetts
Federal Register
Federal Register
Department of State
Reuters
Department of State
Department of State
Federal Register
This report explains the system; it is not legal advice. Immigration outcomes are fact-specific and deadlines can be unforgiving. For an individual case, use current government instructions and qualified legal counsel.