Important Updates
Important Updates
December 23, 2025 | ZimbabweZimbabwe: New Indigenization Regulations in Effect
December 23, 2025 | United StatesFranceinfo: États-Unis : bientôt une inspection au peigne fin des réseaux sociaux avant d'entrer sur le territoire
December 23, 2025 | CanadaToronto Star: Canada Wants to Bring in 1,000 Researchers and Skilled Workers. Here’s What It Will Take
December 23, 2025 | United StatesUnited States: DHS Issues Final Rule to Replace Random H-1B Cap Lottery with Wage-Level-Based Weighted System for H-1B Cap Allocation in Time for Implementation in Early 2026
December 23, 2025 | United StatesUnited States: USCIS Suspends Approvals of Pending Diversity Visa Adjustment Applications While Security Reviews Are Conducted
December 23, 2025 | ZimbabweZimbabwe: New Indigenization Regulations in Effect
December 23, 2025 | United StatesFranceinfo: États-Unis : bientôt une inspection au peigne fin des réseaux sociaux avant d'entrer sur le territoire
December 23, 2025 | CanadaToronto Star: Canada Wants to Bring in 1,000 Researchers and Skilled Workers. Here’s What It Will Take
December 23, 2025 | United StatesUnited States: DHS Issues Final Rule to Replace Random H-1B Cap Lottery with Wage-Level-Based Weighted System for H-1B Cap Allocation in Time for Implementation in Early 2026
December 23, 2025 | United StatesUnited States: USCIS Suspends Approvals of Pending Diversity Visa Adjustment Applications While Security Reviews Are Conducted
December 23, 2025 | ZimbabweZimbabwe: New Indigenization Regulations in Effect
Subscribe
Fragomen.com home
Select Language
  • English
  • French
  • French - Canadian
  • German

Select Language

  • English
  • French
  • French - Canadian
  • German
ContactCareersMediaClient Portal
Search Fragomen.com
  • Our Services
    For EmployersFor IndividualsBy IndustryCase Studies
  • Our Tech & Innovation
  • Our People
  • Our Insights
    Worldwide Immigration Trends ReportsMagellan SeriesImmigration AlertsEventsMedia MentionsFragomen NewsBlogsPodcasts & Videos
  • Spotlights
    Navigating Immigration Under the Second Trump AdministrationFragomen Consulting EuropeImmigration Matters: Your U.S. Compliance RoadmapCenter for Strategy and Applied InsightsVietnamese ImmigrationView More
  • About Us
    About FragomenOfficesResponsible Business PracticesFirm GovernanceRecognition

Our Services

  • For Employers
  • For Individuals
  • By Industry
  • Case Studies

Our Tech & Innovation

  • Our Approach

Our People

  • Overview / Directory

Our Insights

  • Worldwide Immigration Trends Reports
  • Magellan Series
  • Immigration Alerts
  • Events
  • Media Mentions
  • Fragomen News
  • Blogs
  • Podcasts & Videos

Spotlights

  • Navigating Immigration Under the Second Trump Administration
  • Fragomen Consulting Europe
  • Immigration Matters: Your U.S. Compliance Roadmap
  • Center for Strategy and Applied Insights
  • Vietnamese Immigration
  • View More

About Us

  • About Fragomen
  • Offices
  • Responsible Business Practices
  • Firm Governance
  • Recognition
Select Language
  • English
  • French
  • French - Canadian
  • German

Select Language

  • English
  • French
  • French - Canadian
  • German
ContactCareersMediaClient Portal

Associate

John Perry Warren

  • People

Associate

John Perry Warren

Country / Territory

  • United StatesUnited States

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

  • PrintPrint
  • SaveSave

John is an Associate at Fragomen’s Chicago office, where he partners with small companies to large Fortune 500 corporations on a diverse array of immigration matters, including nonimmigrant visas, immigrant visas, immigration compliance and foreign national employee retention. He advises and files nonimmigrant visa petitions including H-1Bs, H-1B CAP, L-1A, L-1B, TN, E-3, E-2, J-1, O-1A, F-1, B-1/2 and all respective dependent applications; immigrant visa processes including PERM labor certification (9141, running recruitment, filing 9089, audits, I-140/AOS) and maintaining batch PERM programs for corporate clients; as well as consults and files petitions for EB-1A, EB-1B, EB-1C, O-1A, National Interest Waivers (NIWs), corporate LZ filings (initials, amendments), 212(e) waivers, FOIA requests and AAO appeals. He also advises on and files I-130 applications, both with USCIS and applications for consular processing abroad.

John has provided pro bono support at the South Texas Family Residential Center in Dilley, Texas to women and children preparing for credible fear interviews (CFIs) for asylum proceedings and has experience preparing and filing U visa applications in partnership with the National Immigrant Justice Center (NIJC). He has also provided I-821 Temporary Protected Status (TPS) and I-765 Employment Authorization Document (EAD) pro bono support services for migrants relocated to Chicago through The Resurrection Project (TRJ).

Before law school, John was a United States Peace Corps volunteer in Chongqing, China for over two years teaching English, translation and interpreting classes to university students.

During law school, John started working with Fragomen as a Law Clerk and later a Legal Writer where he focused on complex drafting petitions including EB-1A, EB-1B, O-1A, NIWs and responses to Requests for Evidence (RFEs) or Notices of Intent to Deny (NOIDs) for nonimmigrant and immigrant visa applications.

John speaks English and is proficient in Mandarin Chinese.

During law school, John started working with Fragomen as a Law Clerk and later a Legal Writer where he focused on complex drafting petitions including EB-1A, EB-1B, O-1A, NIWs and responses to Requests for Evidence (RFEs) or Notices of Intent to Deny (NOIDs) for nonimmigrant and immigrant visa applications.

John speaks English and is proficient in Mandarin Chinese.

Education

  • Chicago-Kent College of Law, J.D., 2021
  • University of Minnesota - Twin Cities, B.A., 2016

More from John

Admissions

Bar Admissions: Illinois

Practice Limited to Federal Immigration & Nationality Law

Awards

Listed among Super Lawyers Illinois Rising Stars – Immigration, 2024

Professional accomplishments

Member, American Immigration Lawyers Association

Member, Chicago Bar Association

Member, Chicago’s LGBTQ+ Bar Association (LAGBAC)

Publications and lectures

Speaker, “ABC’s of LGBTQ+ Global Mobility.” Chicago Bar Association, 30 June 2023.

Country / Territory

  • United StatesUnited States

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

Media mentions

Franceinfo: États-Unis : bientôt une inspection au peigne fin des réseaux sociaux avant d'entrer sur le territoire

Partner K. Edward Raleigh commented on proposed changes to US entry requirements.

Learn more

Video

The Schengen C Visa: What Non-EU Nationals Need to Know About 90/180-Day Travel

Business Immigration Consultant Marisa Gizzi from Fragomen explains everything about the Schengen C Visa: who needs it, how to apply and key travel tips to stay compliant in the Schengen Area. 

Learn more

Media mentions

Toronto Star: Canada Wants to Bring in 1,000 Researchers and Skilled Workers. Here’s What It Will Take

Partner Rick Lamanna discussed Canada’s $1B plan to attract global researchers.

Learn more

Blog post

Tier 1 Investor Visa Extension Deadline | February 2026 UK Update

Manager Alex Hood, Senior Associate Kimberley Ong and Immigration Paralegal Ataa Rajput explain the final extension and settlement deadlines for UK Tier 1 Investor visa holders and outline who can still qualify and why early action is essential.

Learn more

Media mentions

Business Insider: New H-1B Visa Rules Upgrade Some Lottery Applicants — and Squeeze Out Others

Partner K. Edward Raleigh on how the $100K H‑1B fee factors into hiring international talent.

Learn more

Media mentions

China Daily: HK Softens Imbalance in Wealth Migration

Managing Director Magdalene Tennant and Director Kitty Lo highlight Hong Kong as an attractive destination for global investors.

Learn more

Blog post

Countdown to the Italy Winter Games 2026: What You Need to Know Before Travelling

IPM Business Process Manager Hazel Yaman outlines key visa, work authorisation and border considerations for athletes, media, event staff and spectators travelling to Italy for the Milan–Cortina 2026 Olympic and Paralympic Winter Games, including the impact of the EU’s new Entry/Exit System.

Learn more

Media mentions

Gulf News: Moving to the UAE from the UK? Here’s Your Visa Guide for Jobs, Business and Golden Visas

Corporate Services Director Elena Caron highlights key considerations for UK nationals moving to the UAE.

Learn more

Media mentions

People Management: The UK’s Earned Settlement Proposal: What HR Leaders Need to Know

Associates Charlotte Roberts and Karina Casey highlight how the UK’s earned settlement proposal may influence global talent and HR planning.

Learn more

Media mentions

Konfederacja Lewiatan: Procedura legalizacji zatrudnienia cudzoziemców w Polsce po zmianach w 2025 r.

Poland Immigration Strategy Director Tomasz Rogala contributes to Konfederacja Lewiatan’s analysis on 2025 changes to work permits and foreign employment in Poland.

Learn more

Blog post

F and J Visa Updates: Social Media Checks Begin as DHS Proposes New Limits

Associate Alejandro Hernandez analyses new F and J visa screening practices, including social media vetting by US consulates and proposed DHS changes that could significantly alter admission periods for students and exchange visitors.

Learn more

Awards

Fragomen Ireland Awarded the KeepWell Mark by IBEC

Fragomen Ireland is accredited with IBEC’s KeepWell Mark™, recognizing the practice’s commitment to wellbeing, inclusion and responsible business.

Learn more

Media mentions

Franceinfo: États-Unis : bientôt une inspection au peigne fin des réseaux sociaux avant d'entrer sur le territoire

Partner K. Edward Raleigh commented on proposed changes to US entry requirements.

Learn more

Video

The Schengen C Visa: What Non-EU Nationals Need to Know About 90/180-Day Travel

Business Immigration Consultant Marisa Gizzi from Fragomen explains everything about the Schengen C Visa: who needs it, how to apply and key travel tips to stay compliant in the Schengen Area. 

Learn more

Media mentions

Toronto Star: Canada Wants to Bring in 1,000 Researchers and Skilled Workers. Here’s What It Will Take

Partner Rick Lamanna discussed Canada’s $1B plan to attract global researchers.

Learn more

Blog post

Tier 1 Investor Visa Extension Deadline | February 2026 UK Update

Manager Alex Hood, Senior Associate Kimberley Ong and Immigration Paralegal Ataa Rajput explain the final extension and settlement deadlines for UK Tier 1 Investor visa holders and outline who can still qualify and why early action is essential.

Learn more

Media mentions

Business Insider: New H-1B Visa Rules Upgrade Some Lottery Applicants — and Squeeze Out Others

Partner K. Edward Raleigh on how the $100K H‑1B fee factors into hiring international talent.

Learn more

Media mentions

China Daily: HK Softens Imbalance in Wealth Migration

Managing Director Magdalene Tennant and Director Kitty Lo highlight Hong Kong as an attractive destination for global investors.

Learn more

Blog post

Countdown to the Italy Winter Games 2026: What You Need to Know Before Travelling

IPM Business Process Manager Hazel Yaman outlines key visa, work authorisation and border considerations for athletes, media, event staff and spectators travelling to Italy for the Milan–Cortina 2026 Olympic and Paralympic Winter Games, including the impact of the EU’s new Entry/Exit System.

Learn more

Media mentions

Gulf News: Moving to the UAE from the UK? Here’s Your Visa Guide for Jobs, Business and Golden Visas

Corporate Services Director Elena Caron highlights key considerations for UK nationals moving to the UAE.

Learn more

Media mentions

People Management: The UK’s Earned Settlement Proposal: What HR Leaders Need to Know

Associates Charlotte Roberts and Karina Casey highlight how the UK’s earned settlement proposal may influence global talent and HR planning.

Learn more

Media mentions

Konfederacja Lewiatan: Procedura legalizacji zatrudnienia cudzoziemców w Polsce po zmianach w 2025 r.

Poland Immigration Strategy Director Tomasz Rogala contributes to Konfederacja Lewiatan’s analysis on 2025 changes to work permits and foreign employment in Poland.

Learn more

Blog post

F and J Visa Updates: Social Media Checks Begin as DHS Proposes New Limits

Associate Alejandro Hernandez analyses new F and J visa screening practices, including social media vetting by US consulates and proposed DHS changes that could significantly alter admission periods for students and exchange visitors.

Learn more

Awards

Fragomen Ireland Awarded the KeepWell Mark by IBEC

Fragomen Ireland is accredited with IBEC’s KeepWell Mark™, recognizing the practice’s commitment to wellbeing, inclusion and responsible business.

Learn more

Stay in touch

Subscribe to receive our latest immigration alerts

Subscribe

Our firm

  • About
  • Careers
  • Firm Governance
  • Media Inquiries
  • Recognition

Information

  • Attorney Advertising
  • Legal Notices
  • Privacy Policies
  • UK Regulatory Requirements

Our firm

  • About
  • Careers
  • Firm Governance
  • Media Inquiries
  • Recognition

Information

  • Attorney Advertising
  • Legal Notices
  • Privacy Policies
  • UK Regulatory Requirements

Have a question?

Contact Us
  • LinkedIn
  • Youtube
  • Instagram
  • Facebook
  • Twitter

© 2025 Fragomen, Del Rey, Bernsen & Loewy, LLP, Fragomen Global LLP and affiliates. All Rights Reserved.

Please note that the content made available on this site is not intended for visitors / customers located in the province of Quebec, and the information provided is not applicable to the Quebec market. To access relevant information that applies to the Quebec market, please click here.