Important Updates
Important Updates
May 14, 2026 | United KingdomUnited Kingdom: Children Can Now Use Passport E-Gates
May 15, 2026 | AustraliaAustralia: Federal Budget for 2026-27 Released
May 15, 2026 | ChileChile: Expedited Business Visa Implemented for Indian Nationals
May 15, 2026Fragomen Wins 2026 FEM Americas EMMAs for Outstanding Agility & Crisis Management and Thought Leadership
May 15, 2026 | RomaniaRomania: New Unified Work Permit System and Online System Implemented
May 14, 2026 | United KingdomUnited Kingdom: Children Can Now Use Passport E-Gates
May 15, 2026 | AustraliaAustralia: Federal Budget for 2026-27 Released
May 15, 2026 | ChileChile: Expedited Business Visa Implemented for Indian Nationals
May 15, 2026Fragomen Wins 2026 FEM Americas EMMAs for Outstanding Agility & Crisis Management and Thought Leadership
May 15, 2026 | RomaniaRomania: New Unified Work Permit System and Online System Implemented
May 14, 2026 | United KingdomUnited Kingdom: Children Can Now Use Passport E-Gates
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John Perry Warren

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John Perry Warren

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T:+1 312 985 9191

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Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

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Fragomen in Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

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[email protected]

T:+1 312 985 9191

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Fragomen in Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

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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

Fragomen in Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

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Share

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Get in touch

Languages

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[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Fragomen in Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Share

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Share

  • Twitter
  • Facebook
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Get in touch

Languages

  • English
  • Mandarin Chinese

Contact information

Email

[email protected]

T:+1 312 985 9191

F:+1 312 346 1970

Fragomen in Chicago, IL

Fragomen, Del Rey, Bernsen & Loewy, LLP

333 W Wacker Dr 15th Floor

Chicago IL 60606

United States

Share

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Explore more at Fragomen

Awards

Fragomen Wins 2026 FEM Americas EMMAs for Outstanding Agility & Crisis Management and Thought Leadership

Fragomen is recognized with multiple honors at the 2026 FEM Americas EMMAs, including Outstanding Agility & Crisis Management as a Service Provider and Thought Leadership – Best Survey or Research Study of the Year for the Worldwide Immigration Trends Report 2026.

Learn more

Blog post

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Podcast

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Podcast

Reality Check Pt. 2: Immigration Law in Pop Culture

Senior Associate Stephanie Weaver and Associate Julia Manacher continue their discussion on immigration law in popular culture, examining how television and media portray immigration processes and the realities behind common immigration storylines.

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Media mentions

Bloomberg: Trump Wants to Make H-1B Workers More Expensive for US Employers

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Video

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Senior Associate Tuğba Özyakup outlines how Europe’s Entry and Exit System (EES) introduces digital tracking of non-EU short-stay travel across the Schengen Area, requiring more proactive planning, accurate record-keeping and awareness of increased border processing times to avoid delays and overstay risks.

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2026年4月 アメリカ移民法ダイジェストLearn more

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Fragomen Wins 2026 FEM Americas EMMAs for Outstanding Agility & Crisis Management and Thought Leadership

Fragomen is recognized with multiple honors at the 2026 FEM Americas EMMAs, including Outstanding Agility & Crisis Management as a Service Provider and Thought Leadership – Best Survey or Research Study of the Year for the Worldwide Immigration Trends Report 2026.

Learn more

Blog post

Housing Market Dynamics in Saudi Arabia: Policy Changes, Rent Stabilization and Cost of Living Implications for Employers

Destination Services Director Christine Sperr examines how housing market reforms, rent stabilization measures and cost-of-living dynamics in Saudi Arabia are influencing workforce mobility, compensation planning and long-term settlement strategies under Vision 2030.

Learn more

Visas

German Visa Risks: What Past Unauthorised Employment Means for Your Visa Application

Manager Dr. Adela Schmidt explains how German authorities assess past travel and business activities and why suspected unauthorized work during prior visits can lead to visa refusals and temporary entry bans.

Learn more

Podcast

Why Strategy Matters Now: Inside the Center for Strategy and Applied Insights

Partner Cosmina Morariu and Senior Director Leah Rogal discuss the mission of Fragomen’s Center for Strategy and Applied Insights and how it helps organizations and governments navigate evolving immigration policy and global talent mobility challenges.

Learn more

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Fragomen and Papaya Global announce a strategic partnership combining workforce technology and immigration capabilities to help organizations simplify global mobility, enhance compliance and manage cross-border workforces through a more integrated, technology-enabled approach.

Learn more

Video

Understanding Immigration in Latin America: Residency Options and Citizenship Pathways

Latin America & the Caribbean Managing Partner Leonor Echeverria explores how Latin America’s evolving immigration landscape offers accessible and flexible residence pathways for foreign nationals, highlighting key visa options, regional trends and the growing role of digital modernization across the region.

Learn more

Podcast

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Senior Associate Stephanie Weaver and Associate Julia Manacher continue their discussion on immigration law in popular culture, examining how television and media portray immigration processes and the realities behind common immigration storylines.

Learn more

Media mentions

Bloomberg: Trump Wants to Make H-1B Workers More Expensive for US Employers

Partner Kevin Miner discusses how proposed H-1B salary threshold increases may raise employer costs and influence hiring strategies for specialized talent across industries.

Learn more

Video

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In this Mobility Minute, Manager Pierangelo D’Errico discusses Portugal’s newly approved nationality law changes and the potential impact on Golden Visa applicants and other foreign residents.

Learn more

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