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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

Thank You Chen Immigration and Attorneys for your tremendous effort on helping me approve my NIW EB-2 petition. They are very professional from start to end. All the questions asked were answered in a professional manner in timely basis. I really appreciate all your work and suggestion during the process. If anyone of you plan to file your NIWS, Chen Immigration and Attorneys are probably the best options out there.

- M. K., Geophysicist

I cannot describe how excited I was when I got to know that my I-140 EB1A application has been approved. This simply could not be true if without the professional help from the North America Immigration Law Group. I don't think that my background conditions were safe for this application. But I knew that their preparation strategy made my case pretty strong. Although the application was long and challenging, it was very nice to work with their team during the whole process period. They impressed me with excellence, professionalism, and highly responsiveness. I do believe that their service is the best one in the immigration business.
Thank you so much for your effort to help me get through the EB1A application. I have recommended and will be happy to continue recommending your professional team to other people who really want to be greened.

- K. J., Electrical Engineer at New York State

It was an incredible experience working with Chen lawyers. I got my EB1A approved in 10 days. They were so perfect in their work and and took care of every little detail necessary. Very dependable and very friendly to work with. They were very prompt in answering every of my questions; and trust me they have been very kind to have responded to silliest of my doubts and concerns. I strongly recommend them to all my friends. Needless to mention, I am going to work with them for I-485 as well.

- T. K., Research Scientist

I'd like to thank Chen Immigration and attorneys for the great job they did on my I-140 application for NIW. They put together a compelling petition letter with appropriate exhibitions which resulted in my I-140 approval only in 72 days at Nebraska Service Center (the average wait time at this center is more than 10 months now). The team at this firm are experts and experienced. They meticulously prepare all the required documents and effectively communicate with the client. They deliver on time & with the highest quality. I have recommended them to my friends who would like to apply for NIW or EB1A. Chen group knows what they are doing and they are the best, go with them!

- H. C., Postdoctoral Scholar

I had a great experience working with Chen Immigration Law Group. I applied for EB1A premium processing and the case was approved within 2 weeks without any RFE.
I was impressed with the quality of petition letter and the reference letters drafted by their team. Although my field is highly technical, the attorneys seemed highly knowledgeable and were able to present my research in a manner which was easy to understand, impressive and yet not 'over-selling'.
They went over my research/citations meticulously and were able to catch mistakes which honestly I would have missed if I was preparing my own case. They were also very prompt with replying to any questions I had during the process.
In short, I would strongly recommend them to all who want to get through the green card process without stress.

- P. J., Postdoctoral Researcher

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 Story: EB1A Approved for Nanotechnology Engineer Advancing Energy and Sensor Applications

“Thank you for all the help.”

Approved in 29 days

State of Residence: Canada

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Success Stories: Rapid NIW Approval for Translational Epidemiology Specialist Shaping U.S. Chronic Disease Treatment Strategies

“Thank you so much for this excellent news! And thank you so much for all your help throughout this process.”

Approved in 20 days

State of Residence: Massachusetts

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Success Stories: A Strategic Race Against Time- Securing Approval Under EB-2 NIW for a CSPA-Impacted Family

“Thanks again for your outstanding support throughout this process.”

Approved in 392 days

State of Residence: Libya

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Success Story: NIW Win for Turkish Postdoctoral Associate – Approved with the Help of Our Expert Support and Premium Processing Service

“As a researcher in the field of semiconductor technologies, I was looking for a reliable and experienced legal team to handle my EB2-NIW petition. Working with Chen Immigration Group exceeded my expectations. They carefully reviewed my scientific background and built a compelling petition that effectively communicated the national importance of my work. Their system is very organized, and their attorneys are extremely knowledgeable. My petition was approved swiftly, and I sincerely thank them for their excellent service.”

Approved in 58 days

State of Residence: Connecticut

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Success Stories: NAILG Collaborated with PhD Candidate Specializing in Mechanical Engineering to Secure NIW Approval

“I had an excellent experience working with NAILG on my EB2-NIW petition. Their professionalism and responsiveness were outstanding, addressing all my questions about the process promptly and thoroughly. I highly recommend their services!”

Approved in 319 days

State of Residence: Arkansas

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Success Story: We Helped a Ph.D. Student and Researcher Achieve Dual Success With EB1A and NIW Approvals – EB1A Approved via Premium Processing in Just 13 Days

“It’s been a great pleasure working with you, and I appreciate your support and assistance throughout what is otherwise a sensitive, stressful and complicated process that is immigration.”

Approved in 13 days

State of Residence: Georgia

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Success Stories: Driving the Future of Clean Energy: EB2-NIW Approved for Solar Materials Scientist Advancing Perovskite Technologies

“I want to express my sincere gratitude to the entire team for their exceptional work throughout my petition process. From the beginning, the professionalism, expertise, and dedication displayed by everyone involved were outstanding. The attention to detail in preparing and documenting my case was remarkable, and I was consistently impressed by how seamlessly every step was handled. The clarity and efficiency with which the process was navigated made a challenging experience much easier, and I am deeply appreciative of the hard work and commitment shown. Communication was another standout feature of my experience. The timely responses and thorough guidance I received instilled confidence and support every step of the way. I extend my best wishes for continued success and prosperity for the firm. It has truly been a pleasure working with such an invaluable team, and I look forward to future opportunities to collaborate. Thank you once again for your exceptional support.”

Approved in 136 days

State of Residence: Vermont

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Success Stories: Scaling Robotic Intelligence: EB2-NIW Approved for AI Researcher Revolutionizing Robot Learning Systems

“Thank you for your effort.”

Approved in 18 days

State of Residence: California

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Success Story: Approved Without RFE! Graduate Research Assistant Achieves Seamless NIW Success, Thanks to Our Assistance

“I really appreciate the professionalism, prompt responses to my inquiries, the courtesy, and detailed guidance provided by my Attorney and the staff of the Chen Immigration team to me during my I-140 petition preparation process. The reference letters and the petition letter provided to me were incredibly detailed and strengthened my case. I appreciate the patience displayed throughout the process. I would highly recommend the North America Immigration Law Group to anyone with immigration issues. Thanks for all you do.”

Approved in 476 days

State of Residence: Nebraska

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EB1A Approved for Cancer Biology Researcher Advancing Genome Stability and DNA Damage Response Research

“It was a great pleasure working with your team: the responses were professional and prompt.”

Approved in 21 days

State of Residence: California

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Success Stories: EB-1A Petition Approved for Highly Cited Expert in Health Economics and Pharmacoeconomics

“Thank you so much for sending the approval notice for my EB1A case. It has been a pleasure working with you throughout this process, and I truly appreciate your support.”

Approved in 227 days

State of Residence: Ohio

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Success Stories: Innovator in Computer Vision Secured NIW Approval for Nationally Important Research

“I am glad it got approved at the earliest without RFEs, thank you very much for your great efforts behind this :)”

Approved in 47 days

State of Residence: Arkansas

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Success Stories: Decoding Memory and Decision-Making: NIW Approved in 23 Days with NAILG’s Support

“Thank you so much for your help! This is wonderful news.”

Approved in 23 days

State of Residence: New York

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Success Story: A Research Assistant in the Field of Computer Science Won NIW Approval with Our Expert Filing and Strategy

Approved in 295 days

State of Residence: Alabama

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Success Stories: A Postdoctoral Associate in the field of Biomedical Science from Bangladesh Earns EB2-NIW Approval

“I am incredibly grateful for the vigorous support and expertise of my immigration attorney throughout the successful approval of my I-140 petition. Their responses were consistently prompt, and their case writing was exceptional—thorough, well-organized, and enriched with relevant scientific citations that added strong weight to my petition.
 
I was particularly impressed by how carefully they analyzed and enhanced my research profile, crafting compelling statements around my journal articles and clearly articulating their scientific and societal impact. Their orientation toward scientific writing and attention to detail in presenting my work were instrumental to the strength of the petition.
 
I am fully satisfied with their service and would highly recommend them to any researcher seeking expert guidance in the immigration process.”

Approved in 309 days

State of Residence: Massachusetts

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