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Jack C. Sung, Principal Attorney, is an immigrant himself and understands how overwhelming the immigration and visa process may be. Since he started JCS Law Offices in 2007, he and his experienced staff have been providing clients with personalized immigration services. Mr. Sung believes clients should have updates on their cases and direct access to current immigration law. If you call, email, or text JCS Law Offices, Mr. Sung will personally respond to your inquiry within 24 hours. His goal is to keep clients informed so that they can make the right choices.
Mr. Sung is a graduate of Southwestern Law School in Los Angeles, CA. At Southwestern, he distinguished himself by receiving 3 CALI Excellence Awards for achieving the top grades in Contracts, Business Associations, and Sexual Orientation Law. He was also the Associate Editor for Southwestern’s Journal of Law & Trade. During law school, Mr. Sung was already a proponent of immigrant rights as he was an active volunteer with the Los Angeles County Bar Association’s Immigration Legal Assistance Project. He also authored a published article in Southwestern’s Journal of Law and Trade where he argued for giving undocumented workers all the rights and remedies under the National Labor Relations Act. Mr. Sung is also fluent in Mandarin and proficient in Japanese.
Currently, Mr. Sung is an avid volunteer attorney with the Los Angeles Executive Office of Immigration Review Pro Bono Attorney Panel. He was recently nominated for the Public Service Attorney of the Year Award by Los Angeles County Bar Association.
Jack C. Sung's Volunteer Work:Los Angeles Executive Office of Immigration Review Pro Bono Attorney Panel
Los Angeles County Bar Association’s Immigration Legal Assistance Project
State Bar of California
Los Angeles County Bar Association Immigration Law Section
Taiwanese American Lawyers Association (台美律師協會)
American Immigration Lawyers Association
Nominated, Public Service Attorney of the Year Award by Los Angeles County Bar Association
Author, Killing Two Birds With One Stone: Giving Undocumented Workers All the Rights and Remedies Under the National Labor Relations Act Deters Employers from Hiring and Exploiting Them, 13 SW. J.L. & Trade Am. 155 (2007).
Associate Editor, Journal of Law & Trade in the Americas (2006-2007)
Staff Member, Journal of Law & Trade in the Americas (2005-2007)
CALI Excellence Award, Contracts
CALI Excellence Award, Business Associations
CALI Excellence Award, Sexual Orientation Law
Honorable Senior Judge Takasugi in the 9th Circuit Federal Court
Los Angeles City Attorney’s Office
Los Angeles District Attorney’s Office
1
Practice Area
20 years | 2,500 cases
We have not found any cost information for this lawyer
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Chat withState: California
Acquired: 2007
No misconduct found
2975 Wilshire Blvd. Suite 352, Los Angeles, CA, 90010
Showing 1 - 5 of 793 client reviews from Avvo
Posted by Jasmine | January 8, 2026 | Consulted Attorney
Lawyer Jack is so nice to answer all questions you help clearly and patiently
Posted by anonymous | December 22, 2025 | Consulted Attorney
If I can give 10 stars, I will. Jack Sung is the best attorney I have ever met. He is kind, patient, professional, and supportive. My case is complicated and critical. If I take any steps incorrectly, its consequence will be irreversible. Therefore, after consulting with Jack Sung, I follow his advic...
Posted by Mandy | December 5, 2025 | Consulted Attorney
I met lawyer Jack Sung through Facebook. He had very positive reviews online, and since a family member had a green card renewal issue, I decided to try contacting him. I was very touched by his incredibly quick response, and his replies were always very affirmative – that's really important. Thank y...
Posted by Aviad | December 4, 2025 | Hired Attorney
Exceptional immigration attorney with almost 20 years of experience, Jack is an outstanding advocate. He supported me through almost every process of my immigration journey with clarity, patience, and genuine care. He explained each step in plain language, kept me informed, and made the entire experi...
Posted by Ting | November 22, 2025 | Consulted Attorney
The lawyer is highly professional, provides friendly service, and always puts the client's
"I have known Jack professionally for nearly 6 years. Jack, in addition to being highly likable, is a resourceful immigration attorney. I recommend and endorse him without reservation."
"Jack is my go-to Immigration reference. We have worked together on some cases and he has even done some cases for my own family members. He is extremely knowledgable, very accessible by email/phone/chat, and always responds quickly and swiftly to any question. He is multi-lingual and extremely capable of juggling many things at once, which is what an immigration attorney has to do. He's great!"
"I have known Jack for about a year through an online legal forum. He's very knowledgeable about any immigration law issues. What distinguishes him from many other practitioners is that he's very passionate about his practice area (immigration) and committed to excellent client service. I have seen him actively participating in local communities and answering any questions about immigration law without reservation. I highly recommend him!"
"Jack Sung takes the time to personally interact with his clients. He offers free consultations and directs new callers directly to his cell phone, even after normal business hours. He is patient and cares about his clients. I highly recommend him for any immigration issue."
"Jack is highly motivated and energetic. He genuinely cares about his clients and is sympathetic to their needs. He is also very knowledgeable about immigration law and its application to individual cases."
"Jack cares so much about his client that he used to take calls from clients at all hours. I always see him at different bar association functions and seminars, learning and sharing."
Business lawyer
Family lawyer
Employment and labor lawyer
Unknown lawyer
2018
Client's Choice, Avvo
2007
Public Service Attorney of the Year, Criminal Courts Bar Association Los Angeles
2007
Contracts, CALI Excellence for the Future Award
2007
Business Associations, CALI Excellence for the Future Award
2007
Sexual Orientation LAw, CALI Excellence for the Future Award
2012 - Present
Vice President, Taiwanese American Lawyers Association (TALA)
2007 - Present
Principal Attorney/Owner, JCS Immigration and Visa Law Office
2007 - 2013
Volunteer Attorney, Los Angeles Executive Office of Immigration Review Pro Bono Attorney Panel
2007 - 2013
Volunteer Attorney, Los Angeles County Bar Association's Immigration Legal Assistance Project
2006 - 2007
Law Clerk, Los Angeles County District Attorney's Office
2006 - 2007
Law Clerk, 9th Circuit Federal Court Of Appeals
2005 - 2006
Law Clerk, Los Angeles City Attorney's Office
2008 - Present
Taiwanese American Lawyers Associationmember
2007 - Present
Los Angeles County Bar AssociationMember
2007 - Present
American Immigration Lawyers AssociationMember
Asylum Approval in 90 days
2007
Juris Doctor
2003
Undergraduate
2013
Legal Career Seminar
2013
Same-Sex Marriage Immigration
2013
Immigration Law
2007
Mandarin
Chinese, Min Nan
English
Legal Answers
Travel on an NTA (notice to appear) pending issuance
29 Oct 2010
Early walk in biometrics, can this be a problem?
20 Oct 2010
I485 / I130 Medical Exam: Marijuana Use An Issue?
23 Nov 2008