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U.S. Visa (visa)

Recommended Article: 【Study Abroad Admissions】 Checklist Before Entering the U.S.


1. Overview

2. Domestic

3. International

4. Application method


1. Overview

⑴ Visa

① A visa is merely a travel document, while the I-94 serves as the document indicating one’s status.

② There are instances where individuals remain in the U.S. illegally by not leaving the country even after their visa has expired.

⑵ Permanent Residency (Green Card)

① Procedure

Method 1: Consulting with a law firm (Example: https://www.wegreened.com)

Method 2: There is a procedure to obtain a U.S. green card by obtaining a Ph.D.: There is a cheaper way to get a green card other than through a law firm.

○ To acquire a U.S. green card, it is necessary to hire a lawyer and costs more than 5,000 USD, along with a requirement of residing in the U.S. continuously for over a year.

② Advantages

○ More opportunities for various fellowships.

○ The cost for a professor to fund a green card graduate student is lower.

③ Disadvantages

○ After obtaining the green card, there is a continuous residency requirement to keep it valid, leading many to opt for U.S. citizenship.

○ Continuous residency requirement: Likely, one cannot leave the U.S. for more than 6 months – to be updated.

○ South Korea does not allow dual citizenship for those over 65 years of age or those who were not originally U.S. citizens.

○ Initially applicable only to men, the logic of equity has extended this to women as well.

○ Due to this, there is a motive to either renounce Korean nationality or reissue the green card.

○ If a company requires having a green card, it is likely not a global company.

⑶ Citizenship (citizenship)

① There are standardized requirements for acquiring citizenship, such as a certain period of employment



2. Domestic

○ U.S. citizen

○ AM: amnesty recipient

○ AP: approved petitioner for immigrant visa

○ AS: asylee

○ DC: dual citizenship

○ PR: permanent resident, including specific status of domestic student unknown

○ RF: refugee



3. International

○ A1: diplomatic. foreign government official or employee, family and servants

○ A2: other foreign government official or employee and members of immediate family

○ A3: diplomatic staff

○ B1 : temporary visitor for business

○ B2: visitor, pleasure, prospective student B-2 temporary visitor for pleasure

○ C1: alien in transit

○ C2: alien in transit to UN headquarters

○ C3: foreign government official or staff in transit

○ C4: transit without visa

○ D1: crewman (ship or aircraft crew)

○ E1: treaty trader, spouse and children

○ E2: treaty investor, spouse and children

○ EC: long-term foreign investors in the CNMI (Commonwealth of Northern Mariana Islands)

○ E3: specialty occupation workers, nationals of the Commonwealth of Australia

F1: academic students and students in language training programs

○ It is illegal to work on an F1 visa: However, after obtaining an F1 visa, employment (e.g., company, postdoc) is guaranteed for 3 years through OPT

Difference between F1 and J1

○ It’s easy to transition from an F1 visa (e.g., U.S. Ph.D.) to H1, but difficult from a J1 visa (e.g., U.S. postdoc) to H1

○ Reason: J1 visa has a 5-year limitation + you must return to your home country for 2 years after the visa expires

○ OPT: Part of the F1 visa.

○ After obtaining an F1 visa, employment (e.g., company, postdoc positions) is guaranteed for three years through OPT.

○ Purpose: A gift-like program designed to facilitate smooth career transitions for students.

○ CPT

○ F2: family of F1 student

○ Being in the U.S. does not guarantee the opportunity to study or work

○ F3: commuter student (valid in Registrant files only)

G1: principal representative of foreign government to international organization and family

○ G2 : other representative of foreign government to international organization and family

○ G3: representative of non-recognized foreign government to international organization and family

○ G4: international organization officer and family

○ H1: temporary worker of distinguished merit and ability (employment visa)

H1B

○ Overview

○ The main U.S. employment visa that can be received by professionals with at least a bachelor’s degree. It is possible to pursue a PhD on an H-1B visa.

○ The agency responsible for H-1B visas is USCIS.

Case 1. For-profit institutions (e.g., company)

○ H1B has a quota and is given by lottery: The competition rate for bachelor’s and master’s degrees is about 1:10, but it’s relatively easy for doctoral talent

Case 2. Non-profit institutions (e.g., university)

○ For postdocs or professors, it can be issued anytime regardless of the quota

○ The H1 used by schools is different from the corporate one

○ Research-focused universities issue H1s frequently, but smaller colleges prefer individuals with permanent residency

○ H-1B Cap (Lottery)

○ Annual cap of 65,000

○ U.S. master’s cap of 20,000

○ 10,500 for E-3 Australian nationals + 6,800 for H-1B1 Chile and Singapore Free Trade Agreements

○ Based on the US Government fiscal year: Procedures are conducted from October 1 to September 30 each year

○ Employer registration system applied starting from FY2021

○ Employers register early in the year

○ Selections start in mid-March

○ 90-day filing window assigned

○ Exact dates vary year-to-year

○ Lottery selection does not mean H-1B approval: Selection means that the employer can file a petition on behalf of the candidate

○ There is a possibility to be selected in a second drawing if not initially chosen, though chances are low

○ The H-1B visa year starts on October 1

○ OPT STEM extensions (24 months) – Employer must participate in E-Verify

○ OPT cap gap measures

○ No country cap for H-1B visas; unlike green cards, which have country caps

○ Cap-exempt

Case 1. If you have a cap-subject H-1B and have not left the U.S. for more than a year or have not changed employers

Case 2. Research-based nonprofit organizations: Not all nonprofit organizations qualify

○ Benefit: Allows freedom to change employers

○ Cap-exempt to cap-subject

○ If you have left the U.S. for more than a year after obtaining an H-1B visa, there is a possibility of this happening.

○ If there is a sudden change in job type, there is a possibility of this happening.

○ If there is a sudden change in workplace, there is a possibility of this happening.

○ Due to work-from-home flexibility, there is a possibility of this happening.

○ Effects of Issuing an H-1B Visa

○ Sponsoring an H1B is very expensive for companies; therefore, they prefer not to sponsor an H1B if the individual qualifies for OPT or J1 status.

○ It is possible to have multiple H-1Bs at the same time if you are doing several jobs.

○ Issued for a maximum period of three years, with the possibility to extend up to a total of six years.

○ Spouses and children can qualify for H-4 status.

○ Time spent in L visa status is counted towards H visa status and vice versa.

○ Conversely, time spent in H-4 visa status is not counted towards H-1B status, and vice versa.

○ H-1B visa holders must submit Form I-140 approval and Form I-765 to begin employment.

○ The H1B is a non-immigrant visa, and while immigration intent should not be indicated, many people transition from an H1B to permanent residency.

○ H-1B Application Process

○ Stage 1: PW (Prevailing Wage)

○ The Department of Labor sets a minimum wage to issue H1Bs only to highly skilled workers.

○ Stage 2: LCA (Labor Condition Application)

○ It is crucial to remember that the job description must be written like a professional job, as per the intent of the H-1B.

○ Stage 3: I-129: Petition and fee

○ Stage 4: VISA: Visa processing (only necessary for travel)

○ Additional Information:

○ If your H1B is approved in April, your OPT ends in July, and your H1B starts in October, no additional procedures are necessary.

○ When transitioning from a J1 to an H1B, keep in mind that if your J1 expires and your H1B is pending, re-entry into the U.S. may be difficult.

Difference between H1 and J1 (ref)

Difference 1. The reason universities often use J1 instead of H1 for postdocs

Reason 1. J1 process is faster

Reason 2. The salary that needs to be paid to J1 postdocs is less: J1 has a lower minimum salary than H1

Reason 3. For J1, there is less support for health insurance or moving expenses

Difference 2. The possibility of applying for permanent residency: Although J1 or H1 visa holders can technically apply for permanent residency, because they are non-immigrant visas, failure to obtain residency can complicate future visa issuance

○ For J1 → H1B or J1 → permanent residency, a J1 waiver is needed

○ There is a certain period after receiving J1 before you can apply for a waiver

○ If denied H1B issuance or permanent residency after a J1 waiver, there’s a possibility of becoming an illegal immigrant

Difference 3. J1 does not pay income tax on wages

Difference 4. After the expiration of J1, there’s an obligation to return to one’s home country for about 2 years before going abroad again

Difference 5. J1 visa has a 5-year limitation, which makes it difficult to switch from J1 to H1

○ H2: temporary worker performing agricultural or other services unavailable in U.S.

○ H3: alien trainee

○ H4: dependent spouse or child of H1, H2, or H3

○ HP: humanitarian parole temporary parole into the U.S.

○ I: representative of foreign information media or family

J1: exchange visitor international student (exchange visa)

○ Issued by the U.S. Department of State

○ Target: Foreign doctoral graduates going to the U.S. for postdoc, researchers, etc. Not a tourist visa

Difference between J1 and F1

○ It’s easy to switch from an F1 visa (e.g., U.S. PhD) to H1, but difficult from a J1 visa (e.g., U.S. postdoc) to H1

○ Reason: J1 visa has a 5-year limitation + after visa expires, must return to home country for 2 years

Difference between J1 and H1 (ref)

Difference 1. The reason universities often use J1 instead of H1 for postdocs

Reason 1. J1 process is faster

Reason 2. The salary that needs to be paid to J1 postdocs is less: J1 has a lower minimum salary than H1

Reason 3. For J1, there is less support for health insurance or moving expenses

Difference 2. The possibility of applying for permanent residency: Although J1 or H1 visa holders can technically apply for permanent residency, because they are non-immigrant visas, failure to obtain residency can complicate future visa issuance

○ For J1 → H1B or J1 → permanent residency, a J1 waiver is needed

○ There is a certain period after receiving J1 before you can apply for a waiver

○ If denied H1B issuance or permanent residency after a J1 waiver, there’s a possibility of becoming an illegal immigrant

Difference 3. J1 does not pay income tax on wages

Difference 4. After the expiration of J1, there’s an obligation to return to one’s home country for about 2 years before going abroad again

Difference 5. J1 visa has a 5-year limitation, which makes it difficult to switch from J1 to H1

○ J2: spouse and children of exchange visitor-student

○ The residency period is the same as the beneficiary’s J-1 visa period, and extension of stay is not possible

○ If there is a spouse, they are guaranteed the opportunity to legally study or work in the U.S.

○ K1: fiancé or fiancée of U.S. citizen

○ K2: child of fiancé or fiancée of U.S. citizen

○ K3: spouse of U.S. citizen who is the beneficiary of I-130 petition filed in the U.S. (LIFE Act)

○ K4: child of alien entitled to K3 classification (LIFE Act)

○ L1: intra-company transferee (executive, managerial and specialized personnel)

○ L2 : spouse and children of intra-company transferee

○ M1: student of vocational or nonacademic institution, not in language training program

○ NATO 1-7: representatives, staff, family, expert employees & civilians accompanying NATO members

○ N8: parent of special immigrant

○ N9: child of special immigrant

○ OT: other visa type, including specific status of international student unknown

O1: alien with extraordinary ability in the sciences, arts, education, business or athletics

○ Visa granted by the U.S. government only to talented individuals in special fields such as science, arts, sports, etc.: Kim Yuna, Yoo Jae-suk, Psy have received it

○ Can apply for a green card in just 6 months

○ If you are a graduate student, you can proceed with the O1 issuance procedure by submitting a Google Scholar profile to NIW(National Interest Waiver) if you have many publications and high citations

○ A friend of mine who graduated from a Stanford PhD program received an O1 visa and used it as a work visa.

○ O2: attendant accompanying and assisting O1

○ O3: spouse or child of O1 or O2

○ P1: individual or team athletes

○ P2: artist or entertainer entering the U.S. to perform under a reciprocal exchange program

○ P3: artist or entertainer entering the U.S. to perform under a program that is culturally unique

○ P4: spouse and child of P1, P2, or P3

○ Q1: international cultural exchange program

○ Q2: Irish Peace Process Cultural and Training Program (Walsh visa)

○ Q3: spouse or child of Q2

○ R1: religious occupations

○ R2: spouse or child of R1

○ S5: aliens supplying critical information relating to organized crime “informant”

○ S6: aliens supplying critical information relating to terrorism “informant”

○ TN: trade visa for Canadians and Mexicans (NAFTA professional)

○ TD: spouse or child accompanying TN

○ T1: victim of severe form of trafficking in persons

○ T2: spouse of a victim of a severe form of trafficking in persons

○ T3: child of victim of a severe form of trafficking in persons

○ T4: parent of a T1 (if T1 victim is under 21 years of age)

○ T5: unmarried sibling under age 18 of T1 under 21 years of age

○ T6: adult or minor child of a derivative beneficiary of a T1

○ U1: victim of certain criminal activity

○ U2: spouse of U1

○ U3: child of U1

○ U4: parent of U1 (if U1 victim is under 21 years of age)

○ U5: unmarried sibling under age of 18 of U1 under 21 years of age

○ V1: spouse of LPR with pending I-130 filed prior to 12/21/2000

○ V2: child of LPR with pending I-130 filed prior to 12/21/2000

○ V3: derivative child of V1 or V2



4. Application Method (Applicant ↔︎ Immigration Authority)

Method 1. Issue after interview at the embassy: It seems to be issued after interviewing +1 ~ +3 days

① It’s easier to get a visa with a financial guarantee letter in English from the National Institute for International Education than a student visa

Method 2. Submitting documents for interview exemption for urgent application and issuing on the reservation date

① Interview exemption is not granted in case of an urgent request for a U.S. visa

Method 3. Traveling visa

① Agency: https://cibtvisas.com/ (Website for Americans)

Method 4. ESTA: Visa Waiver Program (Short-term visa-free entry program, visa waiver program)

① Overview

○ An online application system developed by the U.S. government

○ After a simple travel authorization application, if approved, you can enter the country

○ Only citizens of certain countries, including South Korea, can enter the U.S. for tourism, business, or transit without applying for a visa

② Application

○ Approval is typically within one day, but it can take up to three days

○ When applying, you must scan and upload your passport

Application Guide

③ Issuance

○ If approved, you will be notified by email and can print the related documents from the ESTA website

○ Expires two years after the date of authorization



Entered: 2022.10.20 02:25

Updated: 2024.02.23 07:20

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