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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件成长至超过61,000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

A real pleasure to work with Chen Immigration. I'm very satisfied with the process and, of course, with the result!
It was a persistent, systematic everyday job of their team for several months, tons of e-mails, all replied professionally. No need for a single phone call! No nerves, no hash, no mess, just persistent professional work that resulted in my approval.
Yes they ask for many supporting documents and evidence but the result is a very strong case approved without any RFE. That's extremely important to save time and nerves.

- A. B.

I highly appreciate the outstanding work and help provided by North America Immigration Law group to me during my I-140 petition. They have very good understanding of the case and even easily understood my research and full profile to make the petition. There response before committed time is really appreciable. I found that the case taken by them is a big assurance that it is going to be approved. My EB1A- I-140 got approved very quickly even the day after the premium processing application was received without any RFE or difficulty.
I highly recommend Chen Immigration Team for green card petitions. Thanks a lot for their big help.

- S. S., Group Scientist

I greatly appreciate Chen Immigration Law team for all the help and support, and for their very professional service, from the beginning to the end of my I-140 approval!<
My experience with them with filing my EB2-NIW petition steamily positive. They are professional, well-mannered, timely, and helped us steered through the complex petition process.
I talked with couple of others law firms but find out that Chen Immigration has refund policy, means that they do their homework according to your case before file the case. Which give me more confidence. At the end I figure out that the work very hard to prepare my case. I highly recommend to people if they want to apply for I-140.

- M. W. M, Enterprise Applications Administrator and Developer

The efforts put forth by Chen Immigration and Attorneys has been instrumental in obtaining the approvals for my O1-A and EB-1B (I-140) petitions. The approvals came in 4 and 8 days respectively after request for premium processing. However, this did not happen overnight and neither did I want them to happen overnight. Although my credentials were in place for both the petitions, most of the time was spent on preparing the materials and revising them over and over again. I was very busy in my job and barely had time to go over revisions in a continuous basis. However, the team kept at it, always responding to my questions and carefully going over every single piece of text and supporting evidence. Being trained as a scientist during my PhD, I would say, it was more like writing an academic paper with collaborators - everybody invested time and energy into the process and in the end the paper got accepted. This is a win for us all!
It took around 5 months to prepare the materials mostly because of my intermittent involvements but it was worth the wait. That being said, the logical constructs and inferences laid down by my team of lawyers to construct the reasoning as to why I may be suitable candidate in the area of O1-A and EB-1B criteria is outstanding - there simply was not much room to refute the arguments. Very well done! I will always keep you in mind.

- P. D., Senior Research Scientist

WeGreened has been a pleasure to work with. They were so thorough with everything. With their very knowledgeable and able support and timely help in every respect I could finally get my I-140 approved in EB-1A category.
I would therefore highly recommend them to all who wants to file a permanent residency.

- R. C., Senior Development Scientist

I highly appreciate the support and professionalism of Chen Immigration Law firm. Although it took me a long time to gather all my documents but attorneys from WeGreened.com were never late in replying to any of my concerns. They were extremely meticulous in analyzing my documents and made sure all my supporting exhibits were appropriate. In only 30-days my EB2/NIW was approved and I'm sure it was due to their experience handling of my case. I'll certainly recommend others to consider hiring Chen Immigration Law Assoc. for any kind of immigration purposes. One of my friends is already in touch with them after hearing my success story. I sincerely appreciate their time and effort in preparing my case.

- A. R., Postdoctoral Scholar

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“I’m very satisfied with the service provided. The team was highly professional, responsive, and thorough throughout the entire process. All documents, including the petition and reference letters, were well-prepared and thoughtfully written. I truly appreciate the support and expertise—thank you for making this experience smooth and stress-free.”

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State of Residence: California

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Success Stories: Flexible Technology, Tangible Impact: NIW Approved for Researcher in 3D-Printed Soft Robotics

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State of Residence: New York

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Success Stories: Bridging Global Economies: EB1B Approval Secured for Researcher Advancing Trade and Immigration Policy

“I am very happy with my experience with WeGreened, and I highly recommend them to all. My EB1B was approved without an RFE and the whole process was very seamless. Their clear guidance and attention to detail were instrumental for the success of my application.”

Approved in 18 days

State of Residence: Virginia

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Success Story: 16-Day NIW Success! China-Based Postdoc Wins Approval with Our Strategy and Premium Processing

“I’m truly thankful to the WeGreened team for their outstanding support throughout my NIW petition. As a postdoctoral researcher in computational chemistry, I was impressed by their deep understanding of both immigration law and scientific research. They helped me frame my work in a way that clearly aligned with national interest, and their attention to detail and responsiveness made the entire process smooth and reassuring. Thanks to their expertise, my case was approved in just 16 days. I highly recommend WeGreened to any researcher seeking a strong and strategic NIW application.”

Approved in 16 days

State of Residence: North Carolina

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Success Stories: Another Record: A Health Scientist in Public Health Received EB-1A Approval in 8 Days with NAILG’s Premium Processing

“This is great news! Thank you so much for all your efforts. I truly appreciate you and your team. It was a worthwhile experience. Thank you so much. It has been my utmost pleasure working with your team and the best experience I have had so far in America. I wish I could leave more than a 5-star review. I thank you so much.”

Approved in 8 days

State of Residence: Georgia

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Success Stories: EB1A Approval for a Biotechnology Expert from China

“Thank you for your efforts!”

Approved in 21 days

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Success Story: With Our Expert Guidance, A Pakistani Senior Researcher Achieved NIW Approval

“This firm is very cooperative and is very fast in replying to any queries.”

Approved in 293 days

State of Residence: South Korea

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NIW Approved for a Staff Scientist Advancing Natural Product Drug Discovery

“I really appreciate the excellent work done by Chen Immigration Law Firm.”

Approved in 115 days

State of Residence: Florida

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Success Stories: NIW Petition Approved for a Bioengineering Researcher with NAILG’s Support

“Working with Chen for my green card application has been very systematic and streamlined. They provided a detailed framework to pen down my expertise and gave me advice on how best to formulate the petition. The final petition letter was drafted with utmost care and detail.”

Approved in 393 days

State of Residence: California

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Success Stories: Precision in the Genome: EB2-NIW Approved for South Korean Bioengineer Advancing Gene Therapy and Disease Modeling

“Overall, the process was super smooth, and attorneys were very helpful and informative in answering whatever questions I had throughout the process. I highly suggest anyone considering applying for NIW use the Chen Immigration Attorneys service.”

Approved in 249 days

State of Residence: California

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Success Stories: No RFE, Fast Approval: NAILG Secured EB-1A for Leading Researcher in Human Liver Disease

“I wanted to take a moment to sincerely thank you for your exceptional support and guidance throughout the I-140 EB1A petition process. I am thrilled to know that the petition has been approved, and I truly could not have reached this milestone without your expertise, diligence, and encouragement. Your deep knowledge of the process, meticulous attention to detail, and unwavering commitment to presenting the strongest possible case were evident every step of the way. I greatly appreciate the time you invested in understanding my background and helping to frame my qualifications effectively.”

Approved in 16 days

State of Residence: Indiana

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Success Story: Accelerating Precision Cardiovascular Therapies: Vietnamese PhD Candidate Earns NIW Approval

“Thank you so much for your amazing work and for all your support throughout the I-140 NIW process!”

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“Thank you so much for all your efforts on my green card application. I’m very grateful for all your help.”

Approved in 503 days

State of Residence: New Mexico

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Success Story: NIW Approval for a Chinese Ph.D. Student in Materials Science Despite RFE

“I am grateful to Chen Immigration Law Firm for their outstanding support during my EB-2 NIW application. Their team provided professional and highly detailed guidance throughout the entire process, and the response is always timely. Their letters were well-drafted. highly recommended.”

Approved in 173 days

State of Residence: California

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Success Stories: EB1A Approval Secured for a Biomedical Scientist from India, Advancing Global Cancer Research

“I am very thankful to the team’s support and continuous guidance throughout my EB1 process, as well as my previous NIW process. They are very professional, meticulous, responsive, and very detailed. They know all the immigration processes in depth and guide you with all the details. I appreciate all their help and recommend them to anyone going through the same journey.”

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State of Residence: Washington

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