Outline of the US Visa Process

Part of our Family Visas practice

The US visa process follows a consistent structure even though the forms and agencies vary by category. That matters because applicants who understand the sequence early, petition, visa number, application, interview, and admission or green-card step, make fewer timing mistakes and assemble better evidence from the start.

For European applicants, the hardest part is usually not one form but the interaction between USCIS, the State Department, and sometimes the National Visa Center. This overview maps the main structure, explains where the process splits between nonimmigrant and immigrant cases, and highlights the points where strategy changes the outcome.

The diagram below summarizes the high-level path from visa type to petition, application, interview, and entry.

What Is the Difference Between Nonimmigrant and Immigrant Visas?

The first big divide in US immigration is whether the case is for a temporary stay or for permanent residence.

Every US visa falls into one of two categories: nonimmigrant or immigrant.

Nonimmigrant visas authorize temporary stays. The intended departure date is a condition of admission, and the visa itself does not confer any path to permanent residence (though some categories do permit later adjustment). Examples include the B-1/B-2 visitor visa, the F-1 student visa, and work-authorized categories like the H-1B, L-1, O-1, and E-2.

Immigrant visas are for those seeking lawful permanent residence, a green card. They are issued at a US consulate abroad and authorize entry as a permanent resident. The immigrant visa process is distinct from adjustment of status, which is the domestic route to a green card for people already in the United States. For a detailed comparison, see Consular Processing vs. Adjustment of Status.

The distinction matters from the very first step, because the forms, fees, timelines, and decision-makers differ substantially between the two tracks.

When Do You Need a USCIS Petition?

Many work-based and family-based cases start with USCIS approval before the applicant can even move to the consular visa application.

For most work-based nonimmigrant and immigrant visas, the process begins with a petition filed with US Citizenship and Immigration Services (USCIS), not with the consulate. The petitioner is typically the US employer (or, for certain immigrant categories, the applicant themselves).

Common petition forms include:

Form I-129

Petition for a Nonimmigrant Worker. Used for H-1B, L-1, O-1, TN, and other work visa categories.

Form I-140

Immigrant Petition for Alien Workers. Used for employment-based green card categories EB-1, EB-2, EB-3.

Form I-130

Petition for Alien Relative. Used for family-based immigrant visas.

USCIS adjudicates the petition and either approves or denies it. An approved petition does not grant a visa. It establishes eligibility and authorizes the consulate to proceed with the visa application. For more on the employer petition process in the H-1B context, see Navigating the H-1B Landscape. For L-1 intracompany transfers (a common route for European executives and managers), see L-1 Visa: Intracompany Transfer Guide.

Family-based petitions follow the same petition-then-application structure. An approved I-130 confirms the qualifying family relationship; the immigrant visa application comes later, once a visa number is available. For detail on specific family categories, see Family-Based Green Cards: K-1, CR-1, IR-1.

How Do Visa Numbers and Priority Dates Work?

Approved immigrant petitions do not always move immediately because some categories are controlled by annual numerical limits and per-country demand.

Not all approved petitions lead immediately to a visa. Employment-based and family-based immigrant visas are subject to per-country annual caps set by Congress. When demand exceeds supply in a given category, a waiting list develops. The applicant’s place in that queue is determined by their priority date, typically the date the petition was filed.

The Department of State publishes the Visa Bulletin monthly, showing which priority dates are current, meaning a visa number is available and the applicant can proceed to the final steps. Applicants from high-demand countries (India and China especially) may face multi-year or multi-decade waits in oversubscribed categories. Applicants from most European countries face no meaningful backlog in employment-based categories, but that should still be verified for the specific category. For a full explanation of how the bulletin works and how to use it for planning, see The Visa Bulletin and Priority Dates.

Nonimmigrant visas generally do not involve visa bulletin backlogs, with the notable exception of the H-1B lottery. The H-1B cap is set at 65,000 per fiscal year (plus 20,000 for US master’s degree holders), and registrations routinely exceed available slots. If selected, the registration is converted to a petition; if not, the employer must wait until the following year’s lottery.

What Is the DS-160?

The DS-160 is the online State Department application used for most nonimmigrant visa interviews at US consulates.

For nonimmigrant visas, the consular application is submitted via Form DS-160, an online questionnaire covering personal background, travel history, employment, and the purpose of the trip. The State Department’s official DS-160 page confirms that applicants must complete it online and bring the barcode confirmation page to the interview.

The DS-160 asks detailed questions about prior visa refusals, criminal history, and certain affiliations. Accuracy is essential; inconsistencies between the DS-160 and other records are a common source of administrative processing delays or denials.

What Is the DS-260?

The DS-260 is the core online immigrant-visa application used after an immigrant case reaches the State Department stage.

For immigrant visas processed at a consulate, the application form is the DS-260, the Online Immigrant Visa and Alien Registration Application. It is submitted through the National Visa Center (NVC), which acts as the administrative intermediary between USCIS and the consulate. The NVC collects the DS-260, civil documents, and fees, then forwards the case to the consulate once it is deemed documentally complete.

The NVC stage adds time to the immigrant visa process, typically several months, and applicants should monitor NVC communications carefully to avoid delays caused by incomplete submissions.

How Does Consular Processing Work?

Consular processing is the overseas path to visa issuance and is often the decisive stage for applicants who are not already in the United States.

Once the petition is approved (and, for immigrant visas, a visa number is current and the NVC has forwarded the case), the applicant attends an interview at the US embassy or consulate in their home country. For European applicants, this typically means the US Embassy in their capital city.

The consular interview serves as the final adjudication step. A consular officer reviews the application, asks questions about the applicant’s background, the petition, and their intentions, and makes a determination on the spot in most cases. Approval results in visa issuance; denial triggers a refusal under one or more statutory grounds of inadmissibility.

Key points about the consular stage:

• Appointment availability varies significantly by post and time of year. Some European consulates have backlogs of several months; others have slots available within weeks. Planning ahead is critical.
• Visa validity vs. authorized stay: the visa stamp in the passport is an entry document, not a duration of stay. How long the holder may remain in the US is determined by the CBP officer at the port of entry, noted on the I-94 record.
• Administrative processing: some applications are held for additional review under Section 221(g) of the Immigration and Nationality Act. This is not a denial, but it pauses the case pending further inquiry. Processing can take weeks or months with limited transparency.

For preparation strategies covering documentation, question types, and common grounds for refusal, see Preparing for Your US Visa Interview.

“Applicants usually underestimate how much of consular success is decided before the interview, in the quality and consistency of what was filed upstream,” says Kari Foss-Persson, Esq., Managing Partner at Vinland Immigration.

Processing Times

Visa timing is a combination problem: USCIS speed, visa-number availability, and consular appointment capacity all matter at once.

Visa timelines have two main components: USCIS petition processing and consular appointment availability. Both have varied considerably in recent years due to staffing constraints, policy changes, and case volumes.

USCIS offers premium processing (Form I-907) for many nonimmigrant petition categories. Premium processing guarantees a 15-business-day adjudication for a fee currently set at $2,805 (as of early 2024, subject to change). The fee does not guarantee approval and does not accelerate consular processing.

Consular processing timelines are published by the State Department but reflect historical averages, not predictions. Total time from petition filing to visa in hand can range from a few months for straightforward nonimmigrant cases to several years for oversubscribed immigrant visa categories. For a practical planning framework across different visa types, see Visa Processing Times and How to Plan.

Employment-Based Immigrant Visas

Employment-based green cards are grouped into preference categories, and each one carries its own petition standard and backlog profile.

For European professionals pursuing permanent residence through employment, the main pathways are the EB-1, EB-2, and EB-3 preference categories.

• EB-1 covers persons of extraordinary ability, outstanding professors and researchers, and multinational executives and managers. It does not require labor certification (PERM), and for EB-1A (extraordinary ability) allows self-petition.
• EB-2 covers professionals with advanced degrees or exceptional ability. The EB-2 National Interest Waiver (NIW) also allows self-petition without employer sponsorship, provided the applicant can demonstrate their work is in the national interest.
• EB-3 covers skilled workers, professionals, and other workers. EB-3 typically requires PERM labor certification, which adds time and employer commitment.

For European nationals, EB-1 and EB-2 categories have been current for most recent fiscal years, meaning no significant wait once the petition is approved. For a detailed breakdown of the EB-1 requirements and strategy, see A Guide to the EB-1 Green Card for Professionals.

Company and Investor Visas

European businesses usually encounter the US system first through L-1 and E-2 planning rather than through the broader immigrant-visa framework.

For European companies expanding operations to the US, the nonimmigrant options most commonly used are the L-1 (intracompany transferee) and the E-2 (treaty investor). Both allow the company to transfer or station personnel in the US without navigating the H-1B lottery.

The L-1A (managers and executives) and L-1B (specialized knowledge employees) require that the employee have worked for the foreign affiliate, parent, subsidiary, or branch for at least one continuous year within the three years preceding the petition. The company must file a petition with USCIS, and the employee then applies for the visa at the consulate.

The E-2 visa applies to nationals of treaty countries, including Germany, France, Sweden, Norway, and most EU member states. It requires a substantial investment in a bona fide US enterprise. There is no fixed minimum investment, but amounts below $100,000 face greater scrutiny. The E-2 is nonimmigrant and must be renewed, but it can be held indefinitely with a qualifying enterprise. See The E-2 Visa for Companies Expanding to the US for eligibility requirements and documentation.

For an overview of all major work visa categories, see US Work Visas: A Quick Overview. The company visas section of this site covers the most common options for European businesses in detail.

Family-Based Visas

Family-based immigration begins with a qualifying relationship, but timing depends on whether the category is immediate-relative or preference-based.

US citizens and lawful permanent residents can petition for certain family members to immigrate. US citizens may petition for immediate relatives (spouses, unmarried children under 21, and parents), who are not subject to annual caps and can generally proceed without waiting for a visa bulletin date to become current.

Preference categories for other family members (adult children, siblings, married children of US citizens, and spouses and children of LPRs) are numerically limited and involve waiting periods that vary by category and the petitioner’s status.

For European applicants, the most common family-based routes are:

• IR-1/CR-1: immigrant visa for the spouse of a US citizen (direct consular processing)
• K-1: fiancé(e) visa, allowing entry for marriage within 90 days, followed by adjustment of status

Details on requirements, timelines, and documentation for these categories are covered in Family-Based Green Cards: K-1, CR-1, IR-1. The family visas section provides a broader overview of qualifying relationships and eligibility.

What Can Make an Applicant Inadmissible?

Fitting a visa category is not enough if another part of US immigration law bars the applicant from receiving the visa.

Visa eligibility is not determined solely by fitting into a visa category. Every applicant must also be admissible, meaning no statutory bar applies to their entry. The main grounds of inadmissibility under the Immigration and Nationality Act include:

• Prior immigration violations (overstays, unlawful presence, prior removal orders)
• Criminal history (certain convictions, including minor offenses, can trigger inadmissibility)
• Misrepresentation on prior immigration applications
• Health-related grounds (certain communicable diseases, failure to comply with vaccination requirements)
• Security-related grounds

Some grounds of inadmissibility are waivable; others are not. European applicants with any of these issues in their background should obtain legal advice before applying, since a denial at the consulate can complicate future applications.

“Inadmissibility issues are where otherwise straightforward visa cases become high-risk very quickly, especially if the problem is discovered only at the interview stage,” says Kari Foss-Persson, Esq., Managing Partner at Vinland Immigration.

Summary

The US visa process is easier to navigate when you treat it as a sequence of agency handoffs instead of a single application event.

The US visa process has a consistent underlying structure across categories: establish eligibility through a petition or application, secure a visa number if required, complete the consular application, attend the interview, and manage post-approval formalities. The specifics (forms, fees, timelines, documentary requirements) vary considerably depending on whether the applicant is pursuing a nonimmigrant or immigrant visa, whether an employer is sponsoring the petition, and whether numerical caps apply.

European applicants generally do well on wait times for employment-based immigrant categories. The main variables are petition processing at USCIS, consular appointment availability, and administrative processing. Assembling documentation before the petition stage, rather than scrambling later, reduces the risk of delays at each step.

Related articles

• Visa Bulletin and Priority
• US Work Visas: a Quick Overview
• The O-1 Visa for Companies Expanding to the U.S.
• The EB-1 Visa Petition Process
• The E-2 Visa for Companies Expanding to the U.S.
• The H-1B Visa, Explained
• The Golden Card Program (Trump Card)
• Building a Strong Petition for an O-1 Visa
• A successful E-2 or E-1 Visa Application Process