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北美联合律师事务所(North America Immigration Law Group; Chen Immigration Law Associates)是一家从事美国移民的律师事务所,致力于代表来自美国50个州的公司、研究机构和个人,针对I-140移民申请提供法律服务。 我们专精于职业移民申请,并在下列移民类别保有高成功率的证明记录: EB2-NIW(国家利益豁免)EB1-A(杰出人才)EB1-B(杰出教授/研究员)

我们所累积的上万件I-140批准通知让我们对美国移民局的裁决趋势有着前所未有的洞察力
拥有上万笔的EB-1A,EB-1B和EB-2 NIW批准纪录,我们对USCIS判决I-140案件的方式有着丰富的第一手资料。 由于USCIS会不断改变对EB-1A,EB-1B和EB-2 NIW类别的裁决标准,我们事务所累积的庞大成功案例数据库能提供您前所未有且透彻的USCIS裁决趋势。 我们仔细分析我们所有案例的数据,将分析结果应用于为客户提供最新的建议,并随时调整我们的策略,使我们与美国不断变化的移民法规局势保持一致。 与我们合作,您可以随时得知重要的更新、策略和信息,让您可以对您的申请做出最明智的决定。

我们已经成功帮助过上万位背景和条件与您相似的客户
我们经手过众多的成功案例。无论您的条件、背景、专业领域、签证身份或国籍为何,我们极有可能已经帮助过数百名甚至数千名和您相似的客户。 我们的客户通常对我们能如此了解他们的研究和工作感到印象深刻。 我们的洞察力和理解来自于我们已经处理过许多与您条件类似的案例,这使我们有能力为每份申请量身订制最佳策略。

许多客户都是因为他人的推荐而与我们接洽
多年来,我们事务所吸引了许多新客户与我们合作,他们全都是基于我们的口碑、他人的推荐以及朋友和家人所分享的愉快合作经验而选择我们。 我们以我们的声誉自豪,也努力确保我们提供令人满意的绿卡申请服务给每位客户,让客户乐于与他们的朋友和同事分享经验。 这就是为何截至2025年,我们累积的批准案件总数已从2013年的600件成长至接近64,000件。

北美联合律师事务所 2020 年至 2024 年EB1 / NIW 案件批准数据

顾客见证

The Chen Immigration Law group was recommended to me by a fellow postdoc at a networking event. He claimed that if they say that my credentials are good enough to file a case for a green card then it is almost certain success. He was absolutely right.
After evaluating my credentials we decided to apply under the EB2-NIW category. Overall, it was a pleasure working with them. All my questions were answered promptly and to the point. Although the communication was only through emails, it was very effective. They made very clear to me what documents are necessary and how to obtain them and they drafted amazing reference letters and the I-140 petition letter. The price was very reasonable (the best I could find) and they always keep their timeline.
I am really grateful for their service and I highly recommend them. Thank you so much!

- P. F., Post-doctoral Scientist

I had worked with Chen Immigration group for my O-1A visa first and then retained with them for my I-140 petition under EB1A category. Their services are rapid and prompt with an affordable fee structure. They also have very high success rate of approvals. They have taken utmost care on all the required documentation. They usually respond to my questions in 1 business day. I highly recommend Chen Immigration group for my fellow colleagues for their petitions under various categories.

- R. V., Chief Technology Officer

Many thanks to Chen immigration & Attorneys for their great help, and I had a very good experience working with this professional attorney team, they prepared high quality recommendation letters and petition letters, provide guide in detail and response questions in time, I am lucky to have such a team to help me get the approval. I strongly recommended them to all who are seeking green card.

- Y. H., Postdoctoral Research Associate

It was fantastic to work with Chen Immigration Law Group. I got my I140 approval just in 4 months.Chen Immigration Law Group is a very professional company.They answered all my questions with timely manner and prepared my I140 package really good that I received my approval way before than I expected. I also really like their online service which makes everything easy to understand and to follow the instructions correctly and help you to handle such a complex paper work efficiently.

- A. C., Postdoc

My I-140 petition under NIW category got approved. I have a phd in mechanical engineering and was a postdoctoral fellow at the time of submitting my petition. I would like to thank Chen Immigration Team in drafting the petition and recommendation letters. I am impressed by their professionalism, their willingness to respond to any question in a timely manner and their dedication in emphasizing every aspect of my work and research. I would not be able to draft such an assuring petition letter myself. I am so grateful to have Chen Immigration Team as my attorney. I highly recommend Chen immigration law group. Thank you so much.

- V. V.

Chen Immigration is by far the most professional and meticulous group I have come across. The entire process, right from the evaluation by Victoria Chen, to the final submission to USCIS is systematic and diligently planned. Each and every question is answered and at no point does one feel helpless. The letters are expertly drafted. Kudos to the team and Ms. Chen.

- S. P., Scientist

READ MORE

Success Stories: O1-A Approval Secured for an Assistant Professor from Canada working in the Field of Rheumatology

“It was great working with you on this O-1A application.”

Approved in 11 days

State of Residence: Texas

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Success Stories: EB2-NIW Approved for a Vietnamese Clinical Translational Researcher in Oncology Following a Successful Request for Evidence (RFE) Response

“Chen Immigration turned a challenging RFE into a successful outcome. Their professionalism and understanding of research-driven petitions exceeded my expectations. I am grateful for their work.”

Approved in 139 days

State of Residence: Vietnam

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Success Stories: Teaching and Research Assistant from China Secures NIW Approval Following RFE

“Thank you very much for your message and for all your support throughout the I-140 NIW petition process. I’m truly grateful for your assistance.”

Approved in 268 days

State of Residence: Texas

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Success Story: Fast-Track NIW Win! A Postdoctoral Fellow from China Achieves Approval via Premium Upgrade

“Letters are professional, and responses are fast and helpful. I am glad that I chose Chen Immigration Attorneys to prepare my I-140 case.”

Approved in 38 days

State of Residence: Alabama

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Success Stories: An Innovative PhD Student with Pioneering Work in Renewable Energy Technologies Secures EB2-NIW Approval

“I’m truly grateful for the outstanding support and guidance I received throughout my EB-2 NIW petition process. The team demonstrated deep knowledge, professionalism, and responsiveness at every stage. They prepared a strong petition that highlighted my background clearly and effectively, and I’m thankful to have had such dedicated experts on my side. I highly recommend their services to anyone pursuing an immigration path based on research or professional merit.”

Approved in 140 days

State of Residence: Canada

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Success Story: No RFE Issued: We Helped a Chinese Full Professor and Director in Advanced Computing Secure NIW Approval

“I am really very grateful for your work. It is a great experience. Thank you very much.”

Approved in 490 days

State of Residence: China

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Success Stories: Strategic Petition by NAILG Led to NIW Approval for Neurodevelopment Researcher Within 2 Months

“Thank you very much for helping with my NIW application. It is a great pleasure to work with your team.”

Approved in 44 days

State of Residence: Massachusetts

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Success Stories: Iranian PhD Student in Materials Science Secures NIW Approval without any RFE

“I am truly grateful for the outstanding support and guidance I received throughout my NIW petition process. The team demonstrated deep expertise in both immigration law and the scientific aspects of my case. They crafted a compelling petition that effectively highlighted the national importance of my research in materials science and biomedical implants. The entire process was smooth and transparent, and I was thrilled to receive approval without any RFE. I highly recommend their services to any researcher pursuing a similar path.”

Approved in 485 days

State of Residence: Canada

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Success Stories: Former Deputy Regional Director Earned NIW for Civil Engineering Contributions with NAILG Assistance

“I sincerely appreciate your attention, understanding, clear explanations, and prompt assistance throughout the preparation of my file. Your support has been invaluable, and I am truly grateful for your professionalism and efficiency. I hope for a positive outcome regarding my file and look forward to hearing the results in due course. Thank you once again for your efforts.”

Approved in 35 days

State of Residence: Texas

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Success Stories: EB2-NIW Approval for a Turkish Post-Doctoral Researcher in Artificial Intelligence, Thanks to NAILG’s Strategic Petition

“This is great news! Thank you for your assistance.”

Approved in 345 days

State of Residence: Florida

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Success Story: Our Expert Team Secured NIW Victory for a Postdoctoral Scholar From China

“Thank you very much for the assistance on my I-140 NIW case – I had a very good experience! I want to mention in particular that the reference letters and petition letter first drafts were of high quality, as both of my references noted. At the later stage, though, when there were multiple messages going on and one got missed and led to some delays, the lawyer was able to address it quickly once I followed up!”

Approved in 183 days

State of Residence: California

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Success Story: Without RFE, A Controls Engineer Achieves NIW Success with Our Expert Guidance

“I am pretty much satisfied by the efficiency, clear guidance, and easy communication with WeGreened.”

Approved in 347 days

State of Residence: Massachusetts

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Success Stories: Enhancing Consumer Experience Through AI: NIW Granted to Machine Learning Engineer

“Thank you so much for all the effort and dedication your team has put into my case. It has been a pleasure working with you, and I truly appreciate your support throughout the process. Thanks again for your excellent service, and I’d be happy to recommend your firm to others.”

Approved in 521 days

State of Residence: California

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Success Stories: EB1A Approved for a Chinese Senior Engineer Advancing Battery Technology with NAILG’s Guidance

“Thanks for sharing with me this great news! I really want to thank your team for helping me prepare all these documents throughout the entire process. You are so professional and experienced, I actually already recommended your firm to my friends/peers applying NIW/EB1A and would definitely continue doing so:)”

Approved in 279 days

State of Residence: California

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Success Stories: NIW Granted for Cardiology Fellow Improving Survival Outcomes in Cancer Patients

“Excellent service.”

Approved in 19 days

State of Residence: Ohio

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