William A. Stock (Bill) is one of the country’s leading immigration lawyers. A founding member of Klasko Immigration Law Partners, LLP, he has practiced immigration law exclusively for over twenty years. His clients include small businesses, medium sized companies, and multinational corporations and their employees, as well as individual clients, investors and researchers.

Bill leads a team of thirty-two attorneys, senior and junior paralegals in obtaining employment-based immigration benefits for clients, such as nonimmigrant visa classification (H-1B, L-1, E-1 and E-2, TN and O-1); permanent residence or “green card” status through Labor Certification or as immigrants of Exceptional or Extraordinary Ability (EB-1, EB-2 and EB-3); investment-based immigration (EB-5); and unusual or complicated matters such as physician J-1 waivers, visas for entrepreneurs, and mandamus or APA review actions brought in federal court.

Bill serves as President-Elect on the Executive Committee of the American Immigration Lawyers Association (AILA), the 14,000 member national organization of immigration lawyers.  He has long been active in the association on both a national and state level and has served several terms on the Association’s Board of Governors. In 2000, he received the Association’s Joseph Minsky Award for outstanding accomplishments in immigration law.

Bill is a Senior Editor of AILA’s annual Immigration & Nationality Law Handbook, and is the co-author of the “J Visa Guidebook” from Lexis Publishing.  He was an Adjunct Professor at the Villanova University School of Law.  He has been included since 2004 in Best Lawyers in America (Woodward/ White Inc.); since 2006 in Chambers Global: The World’s Leading Lawyers for Business (Chambers and Partners), Who’s Who in American Law, and The International Who’s Who of Business Lawyers.  Bill is also featured as a 20 top practitioner in the area of Immigration Law by Lawdragon

summa cum laude graduate of the University of St. Thomas (St. Paul, MN), (B.A.1990), he received his law degree from the University of Minnesota (J.D., magna cum laude, 1993) where he was a member of the Order of the Coif.

Industries Served:

  • Information Technology
  • Finance
  • Medical Community (Physicians, Physicians Groups)
  • Universities
  • Scientific Community (Researchers, Scientists)
  • Biotechnology
  • Engineering
  • Manufacturing
  • Pharmaceutical
  • Research Institutions
  • Retail
  • Transportation

Latest Articles by

William A. Stock

Latest Blog Posts by

William A. Stock



  • University of St. Thomas (MN) B.A. summa cum laude 1990
  • University of Minnesota School of Law, J.D. magna cum laude 1993


  • American Immigration Lawyers Association, President Elect (2015 – Present)
  • Director, American Immigration Lawyers Association (2007 – 2011)
  • President, Philadelphia Chapter of the American Immigration Lawyers Association (2005 – 2007)
  • Board of Directors Nationalities Service Center (2000 – 20003)
  • National Chair, Young Lawyers Division, American Immigration Lawyers Association (1998 – 1999)
  • Adjunct Faculty Member, Villanova University School of Law
  • Foreign Student Advisor, University of Minnesota (1991 – 1993)


  • Pennsylvania
  • New Jersey


  • Backpacking
  • Tennis
  • Choir



  • Best Lawyers in America, Woodward and White (2004 – Present)
  • Chambers Global: The Worlds Leading Lawyers for Business, Chambers and Partners (2006 – Present)
  • Chosen as most highly regarded immigration lawyers in the world, International Who’s Who of Business Lawyers
  • Featured as a top practitioner in the area of immigration Law by Lawdragon


  • Klasko Immigration Law Annual Spring Seminar – Philadelphia – (April 19, 2016)
  • AILA Southern California Chapter Conference – Palm Springs, California – (March 5, 2016)
  • Pennsylvania State University – State College, PA – Post Student Years: Immigration Options (February 19, 2016)
  • State Bar of Texas – Houston, Texas – Can We Find Common Political Ground in Immigration? (February 13, 2016)
  • AILA South Florida Conference – Miami Florida – Overview  of Recent Developments, Issues in Intra- Company Transfers Panel (February 4, 2016)
  • AILA Midwinter Conference – Paradise Island, Bahamas – Hot Topics in Legislation and Regulations Panel (January 22, 2016)


Bill is a frequent author and speaker on Immigration law topics around the country.

Bill has served as a Senior Editor of AILA’s annual Immigration & Nationality Law Handbook, and as the co-author of the “J Visa Guidebook” from Lexis Publishing. He has served as an Adjunct Professor at the Villanova University School of Law and has been included since 2004 in Best Lawyers in America (Woodward/ White Inc.); and since 2006 in Chambers Global: The World’s Leading Lawyers for Business (Chambers and Partners), Who’s Who in American Law, and The International Who’s Who of Business Lawyers. Bill is also featured as a 20 top practitioner in the area of Immigration Law by Lawdragon and HR Executive.  

Articles by

William A. Stock

Blog Posts by

William A. Stock


His practice focuses on:

  • The representation of multinational and domestic corporations, assisting with development and implementation of immigration programs to meet their talent management needs while ensuring employee satisfaction;  
  • Representing employees as well as self-sponsored immigrant scientist and investors in obtaining and reaching their immigrant goals;
  • Representing companies and individuals in immigrant-related administrative and federal court litigation, including defense enforcement actions by the Departments of Labor and Homeland Security, and obtaining immigration benefits unlawfully withheld through federal court review of agency actions; and
  • Consultation and outreach services to community organizations, foreign student advisors, and to attorneys.