Immigration Law and Regulation
Expert-defined terms from the Advanced Certificate in Global Mobility and Immigration Policies course at London School of Business and Administration. Free to read, free to share, paired with a professional course.
Adjustment of Status – The process by which an individual already present… #
Adjustment of Status – The process by which an individual already present in the United States changes from a non‑immigrant to an immigrant (permanent resident) classification without leaving the country.
Example #
A H‑1B holder files an I‑485 after their employer’s approved PERM petition becomes current in the Visa Bulletin.
Practical application #
Enables continuity of employment and family life, avoiding the need for a travel document and re‑entry.
Challenges #
Requires meticulous documentation of admissibility, can be delayed by Requests for Evidence (RFEs), and may be impacted by changes in immigration policy during adjudication.
Amended Petition – A filing that updates a previously submitted immigrati… #
Amended Petition – A filing that updates a previously submitted immigration petition to reflect material changes in the underlying facts, such as a new job title, salary increase, or change of employer.
Example #
An employer submits an amended I‑129 for a H‑1B employee after a promotion that raises the wage above the prevailing wage determination.
Practical application #
Keeps the petition aligned with Department of Labor (DOL) requirements and avoids non‑compliance issues.
Challenges #
Timing is critical; filing too late may render the amendment ineffective, and USCIS may treat substantial changes as a new petition, incurring additional fees.
Asylum – Protection granted to individuals who have fled their home count… #
Asylum – Protection granted to individuals who have fled their home country due to past persecution or a well‑founded fear of future persecution based on race, religion, nationality, political opinion, or membership in a particular social group.
Example #
A journalist from Country X files an affirmative asylum application after entering the U.S. on a tourist visa and claiming threats from the government.
Practical application #
Provides a pathway to lawful permanent residence after one year of asylum grant.
Challenges #
High evidentiary burden, long adjudication timelines, and risk of denial leading to removal proceedings.
B‑1 Business Visitor – A non‑immigrant visa category allowing foreign nat… #
B‑1 Business Visitor – A non‑immigrant visa category allowing foreign nationals to enter the United States temporarily for business activities such as meetings, conferences, contract negotiations, and short‑term training.
Example #
An executive travels to the U.S. for a three‑day trade show under a B‑1 visa.
Practical application #
Enables short‑term business engagement without requiring a work visa.
Challenges #
Strict prohibition on productive labor; violation can result in revocation and future inadmissibility.
B‑2 Tourist – A non‑immigrant visa for individuals seeking to visit the U… #
B‑2 Tourist – A non‑immigrant visa for individuals seeking to visit the United States for tourism, medical treatment, or visiting family and friends.
Example #
A tourist from Brazil uses a B‑2 visa to attend a family wedding in New York.
Practical application #
Facilitates short stays for leisure and personal purposes.
Challenges #
Must demonstrate intent to return home; extended stays or unauthorized work can trigger immigration violations.
CPT (Curricular Practical Training) – A work authorization for F‑1 studen… #
CPT (Curricular Practical Training) – A work authorization for F‑1 students that allows them to engage in off‑campus employment integral to their academic curriculum.
Example #
A graduate student in a cooperative education program completes a paid internship that counts toward degree requirements.
Practical application #
Provides real‑world experience while maintaining student status.
Challenges #
Requires prior approval from the Designated School Official (DSO), limited to part‑time during the academic year, and may affect eligibility for post‑completion OPT.
Dependent Visa – A visa category that permits the spouse and minor childr… #
Dependent Visa – A visa category that permits the spouse and minor children of a primary visa holder to accompany or join the principal beneficiary.
Example #
The spouse of an L‑1 intracompany transferee obtains an L‑2 visa, which also allows work authorization after filing an I‑765.
Practical application #
Keeps families together during international assignments.
Challenges #
Dependent status is tied to the principal’s status; loss of the primary visa can jeopardize the dependent’s stay.
Diversity Visa Lottery – A program administered by the Department of Stat… #
Diversity Visa Lottery – A program administered by the Department of State that allocates 55,000 immigrant visas annually to individuals from countries with historically low rates of immigration to the United States.
Example #
An applicant from a qualifying country submits an online entry during the registration period and, if selected, proceeds to an immigrant visa interview.
Practical application #
Provides a route to permanent residence that does not require employer sponsorship.
Challenges #
Random selection, strict eligibility criteria, and a high volume of applicants result in low odds of success.
Dual Intent – A legal doctrine allowing certain non‑immigrant visa holder… #
S. while also pursuing a future immigrant (green card) application.
Example #
An H‑1B professional files an I‑140 for EB‑2 while maintaining H‑1B status.
Practical application #
Facilitates transition from temporary to permanent status without jeopardizing the current visa.
Challenges #
Not all visa categories permit dual intent; applying for immigrant status while on a visa that requires strict non‑immigrant intent (e.g., B‑1/B‑2) can lead to denial.
EB‑1 – The first preference employment‑based immigrant category, encompas… #
EB‑1 – The first preference employment‑based immigrant category, encompassing three sub‑classes: (1) Persons of extraordinary ability, (2) Outstanding professors and researchers, and (3) Multinational executives and managers.
Example #
A world‑renowned scientist files an EB‑1A petition based on published research and major awards.
Practical application #
Offers the fastest pathway to a green card, often with current priority dates.
Challenges #
High evidentiary standards; must demonstrate sustained national or international acclaim.
EB‑2 – The second preference employment‑based immigrant category for prof… #
EB‑2 – The second preference employment‑based immigrant category for professionals holding an advanced degree or individuals with exceptional ability in the sciences, arts, or business.
Example #
A civil engineer with a master’s degree and a job offer files an EB‑2 petition after the employer secures a PERM labor certification.
Practical application #
Allows skilled workers to obtain permanent residency with relatively streamlined processing.
Challenges #
Requires labor market testing unless a NIW is granted; priority dates may retrogress for certain countries.
EB‑3 – The third preference employment‑based immigrant category covering… #
EB‑3 – The third preference employment‑based immigrant category covering skilled workers (minimum two years of experience), professionals (bachelor’s degree), and other workers (unskilled labor).
Example #
A hospitality manager with a bachelor’s degree files an EB‑3 petition after the employer’s PERM approval.
Practical application #
Broadens eligibility to a wider pool of workers.
Challenges #
Longer wait times for countries with high demand; unskilled worker sub‑category may face stricter quota limits.
E‑2 Treaty Investor – A non‑immigrant visa allowing citizens of treaty‑pa… #
E‑2 Treaty Investor – A non‑immigrant visa allowing citizens of treaty‑partner countries to enter the United States to develop and direct the operations of an enterprise in which they have invested a substantial amount of capital.
Example #
An entrepreneur from Germany invests $250,000 in a U.S. tech startup and obtains an E‑2 visa to manage the business.
Practical application #
Enables rapid market entry for foreign investors without a permanent residency requirement.
Challenges #
Must maintain the investment and operational control; visa is renewable but not a path to a green card.
Family‑Sponsored Immigration – The immigration pathway that allows U #
S. citizens and lawful permanent residents to petition for certain family members to obtain immigrant visas.
Example #
A U.S. citizen files an I‑130 for their spouse, who then applies for an immigrant visa at a U.S. consulate.
Practical application #
Promotes family reunification and supports diaspora communities.
Challenges #
Preference categories for siblings and adult children are subject to annual caps and long backlogs.
Foreign Labor Certification – A process administered by the Department of… #
S. workers available for a position and that employing a foreign worker will not adversely affect wages or working conditions.
Example #
An employer files a PERM application for a software engineer, documenting recruitment efforts and prevailing wage determination.
Practical application #
Protects U.S. workers while enabling employers to fill skill gaps.
Challenges #
Complex documentation, strict timelines, and high rates of audit.
H‑1B Specialty Occupation – A non‑immigrant visa for foreign workers in o… #
H‑1B Specialty Occupation – A non‑immigrant visa for foreign workers in occupations that require theoretical or technical expertise and at least a bachelor’s degree or its equivalent.
Example #
A biotech firm sponsors a Ph.D. scientist for an H‑1B visa, filing an LCA with the DOL and an I‑129 with USCIS.
Practical application #
Provides a flexible workforce for high‑skill industries.
Challenges #
Annual cap of 65,000 (plus 20,000 for U.S. advanced degree holders) creates lottery competition; compliance with wage and hour regulations is essential.
I‑9 Employment Eligibility Verification – A mandatory form that employers… #
I‑9 Employment Eligibility Verification – A mandatory form that employers must complete for each employee hired in the United States to verify identity and employment authorization.
Example #
A multinational corporation conducts an I‑9 audit after a routine DOL inspection, ensuring all new hires have completed the form within three days of start date.
Practical application #
Prevents illegal employment and protects employers from penalties.
Challenges #
Managing documentation for a diverse workforce, handling reverifications for expiring work permits, and navigating audit procedures.
I‑140 Immigrant Petition for Alien Worker – The petition filed by an empl… #
I‑140 Immigrant Petition for Alien Worker – The petition filed by an employer (or self‑petitioner in certain categories) to classify a foreign worker for an employment‑based immigrant visa.
Example #
A university files an I‑140 for an outstanding professor under the EB‑1B sub‑class.
Practical application #
Establishes the basis for permanent residency; once approved, the beneficiary may file an I‑485 when a visa number is available.
Challenges #
Requires substantial evidence of qualifications; RFEs are common, especially for extraordinary ability claims.
I‑485 Adjustment of Status Application – The form used by individuals alr… #
I‑485 Adjustment of Status Application – The form used by individuals already in the United States to apply for lawful permanent resident status when a visa number becomes available.
Example #
After an approved EB‑2 I‑140 and a current priority date, a candidate files an I‑485 with supporting medical and financial documents.
Practical application #
Allows for domestic filing, avoiding travel abroad and consular processing.
Challenges #
Processing delays, potential for RFEs or denial based on inadmissibility grounds, and the need for concurrent filing of work and travel authorizations.
Immigration Detention – The custody of individuals pending removal procee… #
Immigration Detention – The custody of individuals pending removal proceedings, often conducted by Immigration and Customs Enforcement (ICE) facilities.
Example #
An individual with an overstayed visa is detained by ICE while awaiting a hearing before an Immigration Judge.
Practical application #
Enables enforcement of immigration laws while ensuring due process.
Challenges #
Limited access to counsel, conditions of confinement, and the impact on family reunification.
L‑1 Intracompany Transferee – A non‑immigrant visa allowing multinational… #
S. affiliate.
Example #
A senior manager from a Japanese subsidiary receives an L‑1A visa to lead a new U.S. division.
Practical application #
Facilitates global mobility and rapid deployment of key personnel.
Challenges #
Must meet stringent managerial or specialized knowledge criteria; frequent site visits from USCIS may trigger audits.
M‑1 Vocational Student – A non‑immigrant visa for individuals enrolled in… #
M‑1 Vocational Student – A non‑immigrant visa for individuals enrolled in non‑academic, vocational, or technical programs.
Example #
A student from India attends a culinary institute in the U.S. on an M‑1 visa.
Practical application #
Provides access to practical training for trade skills.
Challenges #
Limited ability to work off‑campus, strict duration limits tied to program length, and no eligibility for post‑completion OPT.
Naturalization – The legal process by which a lawful permanent resident b… #
S. citizen, typically after five years of continuous residence (or three years if married to a U.S. citizen).
Example #
A green‑card holder files an N‑400, passes the civics exam, and takes the oath at a local USCIS office.
Practical application #
Grants voting rights, eligibility for federal jobs, and protection from removal.
Challenges #
Demonstrating continuous residence, meeting good‑moral‑character standards, and navigating language barriers.
O‑1 Extraordinary Ability – A non‑immigrant visa for individuals who poss… #
O‑1 Extraordinary Ability – A non‑immigrant visa for individuals who possess extraordinary ability in the sciences, arts, education, business, or athletics, demonstrated by sustained national or international acclaim.
Example #
A Grammy‑winning musician obtains an O‑1 visa to perform at a U.S. concert series.
Practical application #
Allows high‑profile talent to work in the U.S. without a labor certification.
Challenges #
Requires extensive documentation of awards, media coverage, and peer recognition; renewals demand continued evidence of acclaim.
Optional Practical Training (OPT) – A period of temporary employment that… #
Optional Practical Training (OPT) – A period of temporary employment that directly relates to an F‑1 student’s major area of study, typically up to 12 months, with a possible 24‑month STEM extension.
Example #
A computer science graduate uses 12 months of post‑completion OPT to work at a software firm.
Practical application #
Bridges academic training with professional experience, enhancing employability.
Challenges #
Application timing is critical; USCIS processing delays can affect start dates, and any unlawful employment can jeopardize future immigration benefits.
PERM Labor Certification – The electronic filing system (Program Electron… #
PERM Labor Certification – The electronic filing system (Program Electronic Review Management) used by the Department of Labor to process labor certification applications for EB‑2 and EB‑3 categories.
Example #
An employer submits a PERM application for a mechanical engineer after completing mandatory recruitment steps and obtaining a prevailing wage.
Practical application #
Satisfies the labor market test requirement, enabling subsequent filing of an I‑140.
Challenges #
Rigid timelines (e.g., 180‑day recruitment period), high audit rates, and potential denial if recruitment is deemed insufficient.
Priority Date – The date that establishes an applicant’s place in line fo… #
Priority Date – The date that establishes an applicant’s place in line for an immigrant visa, typically the filing date of the labor certification or I‑140 petition.
Example #
An applicant’s priority date of 15 March 2022 becomes current in the Visa Bulletin, allowing filing of an I‑485.
Practical application #
Determines when a visa number becomes available, crucial for planning status adjustments.
Challenges #
Retrogression can stall processing for applicants from high‑demand countries, causing uncertainty and potential loss of status.
Refugee Status – A protection granted to individuals outside their countr… #
Refugee Status – A protection granted to individuals outside their country of nationality who meet the definition of a refugee and cannot return due to fear of persecution.
Example #
A family from a war‑torn region is admitted to the U.S. as refugees through a coordinated resettlement program.
Practical application #
Provides a pathway to permanent residency after one year of residence.
Challenges #
Lengthy security vetting, limited annual caps, and integration challenges upon arrival.
RFE (Request for Evidence) – A notice issued by USCIS requesting addition… #
RFE (Request for Evidence) – A notice issued by USCIS requesting additional documentation or clarification to resolve ambiguities in a pending application or petition.
Example #
USCIS issues an RFE on an EB‑1A petition asking for more proof of published citations.
Practical application #
Allows applicants to address deficiencies and avoid automatic denial.
Challenges #
Tight response deadlines (usually 30 days), risk of denial if evidence is insufficient, and added legal costs.
Sponsorship – The act of an employer, family member, or organization agre… #
Sponsorship – The act of an employer, family member, or organization agreeing to support a foreign national’s immigration petition, often involving financial, legal, and logistical responsibilities.
Example #
A multinational corporation sponsors a foreign engineer for an H‑1B visa, covering filing fees and complying with wage requirements.
Practical application #
Enables recruitment of talent and family reunification.
Challenges #
Ongoing compliance obligations, potential liability for the sponsor if the employee’s status is revoked, and the need for accurate documentation.
TN Visa – A non‑immigrant classification under the United States‑Mexico‑C… #
TN Visa – A non‑immigrant classification under the United States‑Mexico‑Canada Agreement (USMCA) that allows qualified citizens of Canada and Mexico to work in designated professional occupations.
Example #
A Canadian accountant obtains a TN visa to work for a U.S. firm in the “Accountant” category.
Practical application #
Offers a streamlined, renewable work authorization without a labor certification.
Challenges #
Must maintain a qualifying job offer; extensions require re‑validation, and the visa is not a path to permanent residence.
USCIS (United States Citizenship and Immigration Services) – The federal… #
USCIS (United States Citizenship and Immigration Services) – The federal agency responsible for adjudicating immigration applications, issuing visas, and enforcing immigration laws.
Example #
USCIS processes an I‑485 application and conducts a biometrics appointment for the applicant.
Practical application #
Central hub for immigration benefits, providing forms, guidance, and adjudication services.
Challenges #
Backlogs, policy shifts, and frequent changes to filing procedures can affect processing times and outcomes.
Visa Bulletin – A monthly publication by the Department of State that lis… #
Visa Bulletin – A monthly publication by the Department of State that lists the availability of immigrant visa numbers by category and country of chargeability.
Example #
The Visa Bulletin for March 2024 shows the EB‑2 category for India is at 1 January 2022, indicating a waiting period for applicants with earlier dates.
Practical application #
Helps applicants and attorneys track when a visa number becomes current for filing an I‑485.
Challenges #
Retrogression can delay status adjustments, and the bulletin’s complex tables require careful interpretation.
Waiver of Inadmissibility – A discretionary relief that allows certain in… #
g., due to unlawful presence, fraud, or certain criminal convictions) to obtain a visa or adjust status.
Example #
A lawful permanent resident separated from their U.S. citizen spouse files an I‑601A provisional waiver for unlawful presence.
Practical application #
Enables families to reunite and individuals to pursue immigration benefits despite past issues.
Challenges #
Requires proving extreme hardship to a qualifying U.S. relative, and processing can be lengthy.
Work Authorization – The permission granted to a foreign national to enga… #
Work Authorization – The permission granted to a foreign national to engage in employment in the United States, typically evidenced by an Employment Authorization Document (EAD).
Example #
An H‑4 dependent spouse files an I‑765 and receives an EAD, allowing them to work for any employer.
Practical application #
Provides flexibility for dependents and certain non‑immigrants to contribute economically.
Challenges #
Renewal timelines, travel restrictions while awaiting a new EAD, and dependence on underlying status validity.
Yellow Card (Employment Authorization Document) – The colloquial term for… #
Yellow Card (Employment Authorization Document) – The colloquial term for the physical card issued by USCIS that proves a non‑citizen’s right to work in the United States.
Example #
An applicant receives a yellow card after approval of their asylum-based I‑765 application.
Practical application #
Serves as proof of eligibility for employers during the I‑9 verification process.
Challenges #
Card expiration requires timely renewal; loss or theft can disrupt employment and necessitate a replacement request.