US Embassy London · Immigrant Visa Unit

Section 221(g): how to prevent it, and how to resolve it

A 221(g) is the single most common way a London immigrant visa case stalls at the window, and almost every one is preventable. This page explains what the green refusal sheet means, walks through every box on it, and sets out the planned mitigations that keep a case out of 221(g) in the first place. If you already have one, the resolution steps are here too.

What a 221(g) is

Section 221(g) of the Immigration and Nationality Act lets a consular officer refuse a visa when the application is incomplete or needs further review, rather than denying it outright. It is a temporary refusal, and in the large majority of London cases it means one thing: something the officer needs is not yet on the file. Supply it, and the case resumes.

At London it is issued at the window on a green Consular Section: Immigrant Visa Unit sheet, with the applicable boxes ticked and a submission email address printed at the top: LNDIVSubmissions@state.gov. The ticked boxes are the entire bar to clear: nothing more, nothing less. The sheet splits 221(g) into two distinct types, and which one you get changes everything about what happens next:

The green sheet, box by box

Below is a real green 221(g) sheet issued at London. On this example the Section 221(g) refusal box is ticked on page 1, and on page 2 the box requiring a joint sponsor is ticked: the classic London financial 221(g). Your sheet will have different boxes ticked; the point is to recognize the form and read only the ticked boxes.

Real green sheet issued at US Embassy London, July 2026. Personal details removed.

Every box that can appear on the sheet

The two pages carry the full checklist below. Only the ticked items apply to you, but knowing what the form can ask for tells you exactly what to have watertight before interview day.

The public charge box

The checklist above is London's, and it predates the change in how public charge is assessed. Posts have since added a dedicated public charge heading to the 221(g) form with a document list of its own. The version below is reproduced from a checklist issued at Consulate General Lagos in 2026. London's form is laid out differently, and this is not a London document. It is here because the documents a public charge refusal asks for are the same documents wherever the refusal happens, and because reading the list before your interview turns it into a preparation checklist.

Community-supplied copy of a checklist issued at Consulate General Lagos, 2026. It carries no case number or applicant name. This is not a London document: see the caution above.

The dominant cause: financial

The overwhelming majority of London 221(g)s are financial. Two patterns account for most of them, and both are avoidable before interview day.

The through-line: where NVC's minimum and London's practice diverge, meet the higher standard before submission. Reaching DQ on lesser evidence and then hitting a 221(g) for the same document costs far more time than getting it right up front.

The petitioner's domicile problem

A joint sponsor can fix income. Nobody can fix the petitioner's domicile. This is the one financial problem on this page that a joint sponsor does not solve, and the guidance consular officers work from says so in terms.

Low petitioner income is survivable: a joint sponsor files alongside and the case goes on. A petitioner who is not US-domiciled is not a paperwork gap, because the petitioner is the sponsor and there is no second filer who can supply it. This catches UK-side couples disproportionately, because the normal thing to do while a case is running is to be together in the UK.

Domicile means your principal residence is in the United States and you intend to keep it there. Both halves. Which leaves four positions: find yours.

What actually counts as evidence

The Department's own list of what establishes domicile is: opening a US bank account, transferring funds to the US, making US investments, seeking US employment, registering children in US schools, applying for a Social Security number, and voting in local, State or Federal elections. Notice what is not on it: property, a mortgage, a lease.

Two things worth knowing if you are rebuilding from nothing: your US address can be a house, an apartment, or an arrangement to stay with family or friends, so you do not need a lease to satisfy that part; and there is no fixed deadline for establishing residence, only the requirement that the officer be satisfied you have in fact taken it up.

Work through this with the NVC checklist, the binder checklist and the interview checklist, which all carry the domicile items.

Prevent it: planned mitigations by stage

A 221(g) is not bad luck. It is almost always a gap that was visible earlier in the process. Here is what to lock down at each stage so nothing is left to be requested at the window.

If you already have a 221(g)

If you were handed the green sheet at the window, work the ticked boxes, and only the ticked boxes. Here is the process.

1. Read exactly what is ticked. That is the complete bar to clear. Do not send more than is asked; extra material only slows review.
2. Wait for the follow-up email. Within 1–2 days of the interview you will receive instructions on how to submit, sent to the email address you registered with the courier service.
3. Submit as instructed. That usually means emailing the documents to LNDIVSubmissions@state.gov with your case number, and/or uploading to AIS and/or sending physical documents by the courier service (no charge).
4. Send everything in one go. If multiple documents are requested, do not submit piecemeal. Wait until you have them all and send together.

An open 221(g), now called back to interview

This section is for one specific situation. You were given a 221(g) before the autumn 2026 interview pause and now, instead of a decision on paper, you have been given a new interview date. The 221(g) may have been an ordinary one, such as a request for joint sponsor documents, or one entered only because of the 75-country nationality pause. London has been calling both kinds back. In one reported pause case, the applicant was refused in May 2026 after a five-minute interview, was emailed on 23 September 2026 and was given a date of 2 October 2026, with an instruction to bring their passport and all their documents. This is expected. Cable 26 STATE 88862 (10 September 2026) contemplates applicants being asked to re-appear for an additional interview. It also requires officers to complete the public charge worksheet in all immigrant visa cases. See the September 2026 update. What the officer is entitled to reopen depends on which kind of 221(g) you hold.

What to do before the new date

1. Close the original request completely. Check that everything ticked on your sheet is in CEAC, and in the email you sent to the post if you sent one. Bring the originals and a printed copy of each document. If you never submitted them, do it now: upload first, email second, as described above.
2. Bring the joint sponsor evidence up to date. The I-864 requires the most recent tax year. If the joint sponsor's documents were prepared before they filed their latest return, bring the new IRS transcript and current evidence of their income, such as recent pay stubs or a letter from their employer. Proof of the joint sponsor's US citizenship or permanent residence and their US domicile should also be in the case.
3. Check which edition of the I-864 you are using. USCIS released the 08/24/26 edition, with a new credit report authorization, and states that only that edition is accepted from 1 October 2026. The Department of State has not published whether an earlier-edition I-864 already on file for a consular case must be replaced. Any new I-864 that is signed now, for example from a replacement or additional joint sponsor, should be on the 08/24/26 edition. The joint sponsor should lift any credit freeze. See what the I-864 does and does not settle.
4. Prepare the beneficiary side. This is the part that a 221(g) issued before the pause never asked about. Write the five-factor public charge statement. Upload it to CEAC and email it at least five working days before the interview. Rehearse the answers aloud, including the joint sponsor questions: why you needed one, how they are related to the petitioner, and whether they have sponsored anyone else. You answer these questions, not the sponsor. See public charge.
5. Check anything that expires. Your medical must be valid on the new date, and your passport should be valid for six months beyond your intended date of entry. Also check your police certificate. Government counsel told the court that time-limited evidence will need to be resubmitted where it has expired (the visa pause page).
6. Bring every original. Treat the new date as a full interview, not a document drop.

When administrative processing asks for your history

In this case the interview ran about an hour and covered two separate things. The first was public charge: the beneficiary's bank balances and property abroad, and the joint sponsor block from the written public charge questionnaire, asked out loud. The second was his field. He holds a degree in cybersecurity. The officer asked about specific attacks, how vulnerability testing is done, and what his thesis covered, and looked things up online while he answered.

He was given a 221(g) with administrative processing ticked, not a document list. The post kept his passport. He was then asked to email a set of personal history details with a fixed subject line, and to attach his CV.

What the form asks for

Most of the form closely matches Form DS-5535, Supplemental Questions for Visa Applicants. The Department describes that form as being for applicants determined to warrant additional scrutiny in connection with terrorism or other national security-related visa ineligibilities. It asks for 15 years of travel, addresses and employment. DS-5535 also asks for five years of social media identifiers, which this form omits. The DS-260 already collects those, so the post may simply not need them again. The physical description and military service items are not on DS-5535.

What it probably means

This is inference, not something the post said. Two kinds of review would explain the form:

• A security check. The 15-year history closely matches DS-5535. The height, weight and identifying marks are the kind of detail used to tell an applicant apart from someone with a similar name in a records check. That is our reading, not the post's.
• A technology-transfer review. INA 212(a)(3)(A)(i) makes an applicant inadmissible if they seek to violate or evade US export-control law. Cases where the applicant's field touches sensitive technology can be referred to Washington for review. A request for a CV and publications list, after detailed questions about the applicant's technical work, is the pattern commonly reported for that review.

Neither says anything about whether the case is approvable. Neither is a public charge finding, and nothing on the form concerns money. The public charge questioning in the same interview may have been fully satisfied.

Who should expect it

No current list is published, so this is a judgement. Be ready for it if you studied or work in a scientific or technical field, particularly security, computing, engineering or the physical sciences, or if you have published research. It is also more likely if your travel history or nationality draws additional checks. The fields that have historically drawn technology checks are set out in the next section.

How to respond

1. Use the subject line exactly as given. It routes your email. Send it to the address on your 221(g) sheet or in the post's instructions, not a guessed one.
2. Answer every item, and write “none” where nothing applies. A blank reads as an omission.
3. Check it against your DS-260. Addresses, employers, prior passports and travel should match what you already filed. Where the DS-260 was shorter, add to it rather than contradicting it.
4. Make the CV precise. Give dates, employers and a plain description of what you actually did. The officer has already heard your spoken account of your work. Make the CV consistent with it, and do not overstate or understate the technical content.
5. Send it in one email, once. Then wait. Administrative processing cannot be expedited. The Department asks applicants to wait at least 180 days from the interview, or from when they submitted supplemental documents if that was later, before enquiring about status, except in cases of emergency travel.

Dual-use careers and technology checks

Some careers are dual-use: the same knowledge serves ordinary civilian work and could also serve weapons, military or intelligence purposes. The State Department's own definition is “technologies which have both civilian and military applications”. A chemical engineer running a pharmaceutical plant, a microbiologist, a penetration tester, a drone developer and a satellite imagery analyst all do legitimate jobs, and all work in fields the Department has listed as sensitive. If the beneficiary's education or career is in one of these fields, the officer may refer the case to Washington before deciding it. At the window that looks like a 221(g) with administrative processing ticked.

The legal basis

INA 212(a)(3)(A)(i)(II) makes an applicant inadmissible if there is reason to believe they seek to enter the US to violate or evade any law prohibiting the export of goods, technology or sensitive information. To answer that question the officer can request a security advisory opinion from Washington. For technology-transfer concerns this is the Visas Mantis check. A 2004 State Department Inspector General review describes the chain: the Bureau of Nonproliferation reviews the case, and the FBI runs a name check. The applicant is not told which check is running, and the post will not confirm it.

The Technology Alert List

Officers use the Technology Alert List (TAL) as guidance. The Bureau of Nonproliferation created it as a list of key words and phrases. The current version is not public. The last public version is State Department cable UNCLAS STATE 147566, Using the Technology Alert List (Update), sent to all posts on 1 August 2002. It has two parts: a Critical Fields List of 15 lettered fields, and the list of state sponsors of terrorism. The cable tells officers they are not expected to be experts in these fields. Instead they should “listen for key words or phrases from the list in applicants' answers to interview questions”.

The table below is the 2002 Critical Fields List. The three rocket and drone fields (C to E) are combined into one row. Treat it as a guide to the kinds of work that draw attention, not as the current list.

What makes a check more or less likely

• Being in a listed field does not by itself require a check, but the bar for skipping one is high. The cable says checks are not mandatory for every applicant in a critical field. It also says officers should decide the case without one only when they believe the ground “clearly does not apply”. When in doubt, they are told to refer.
• Public knowledge is not controlled. The cable states that information in the public domain, and information presented in an academic course, generally is not controlled for technology-transfer purposes.
• Depth and purpose matter more than the job title. The cable tells officers to start by asking whether the applicant proposes advanced research or study (doctoral, postdoctoral or research scholar) or business activity in a listed field. Later guidance, as quoted by university international offices, is broader: graduate-level study, teaching, research, training, employment or commercial transactions. For an immigrant visa, that means what the beneficiary is likely to do in the US matters, not only what they did before.
• Nationality and employer matter. Under the 2002 cable a check is mandatory for anyone who holds a passport of, or is employed by, a state sponsor of terrorism and seeks to work in a critical field. The 2002 list of those countries is out of date, so check the State Department's current list. The cable also flags people affiliated with organisations on the US Commerce Department's Entity List. If the beneficiary has worked for or studied at a foreign university, lab or company, it is worth checking it against the Consolidated Screening List.
• A field not on the list is not a guarantee. The cable tells officers to refer any case they suspect falls under the ground, even if the applicant's profession is not on the list.
• The interview is where it surfaces. Officers are told to listen for key words. In the case above, the officer asked detailed questions about the beneficiary's cybersecurity degree and thesis, then asked for a CV and publications. Immigration practitioners report the same pattern: a 221(g) first, followed by requests for a detailed CV, an employer letter, or evidence that the work is not military.

Military, defence and intelligence backgrounds

The Critical Fields List covers technologies, not roles, and there is no published list of occupations for military, defence or intelligence work. These backgrounds are still asked about directly. The DS-260 asks whether the applicant has served in the military and whether they have specialised skills or training in firearms, explosives, or nuclear, biological or chemical work. The history form in the case above asks for branch, dates, rank and specialty. Conscription or ordinary national service is common and is not a problem in itself. What matters is that the answers are complete and consistent across the DS-260, the history form, the CV and what is said at the window.

How long it takes, and how often it clears

There is no current published figure. The Government Accountability Office found that Mantis checks averaged about 75 days in October 2003, and about 15 days by November 2004 after the process was streamlined (GAO-05-198). The Inspector General reported in 2004 that the Bureau of Nonproliferation received an estimated 10,000 of these referrals a year. It also reported that about 85% of FBI visa name checks came back with no match on the first pass, rising to about 95% after manual review. All of these figures are over 20 years old and come from a much smaller caseload. They show that most checks clear, not how long yours will take. Today the Department asks applicants to wait at least 180 days from the interview, or from submitting supplemental documents, before enquiring about administrative processing.

Prepare before the interview

The 2002 cable tells officers to gather as much detail as they can when they refer a case, because “the effectiveness of the name check (and the turnaround time) is directly related to the completeness of the information”. It names the documents it wants officers to encourage applicants to provide. Having them ready means the referral goes out complete.

1. A complete CV. Dates, employers, job titles, and a plain description of what the beneficiary actually did. Say what the work was for: making a medicine, securing a bank's network, surveying land.
2. A complete list of publications, with titles and dates, including theses and patents. The cable asks for this for the applicant and for an accompanying spouse.
3. Project descriptions for significant research or technical work.
4. A letter from the current employer describing the role and duties, and whether the work involves export-controlled technology.
5. Letters of recommendation, from a US source or from abroad, if the beneficiary has them.
6. Evidence the knowledge is public, where it fits: for example, a course syllabus or standard textbook showing the subject is taught at university level.
7. A short, accurate answer about US plans. The cable's questions include where the applicant will work, who is funding them, and “how, and where, does the applicant plan to use the goods or knowledge acquired?”. An immigrant visa does not require a job offer, and “not decided yet” is an acceptable true answer.
8. The 15-year history described in the previous section, checked against the DS-260.

221(g) vs administrative processing vs the visa pause

Three things get conflated. They are not the same:

Reviewed 24 September 2026. This page is general information, not legal advice.