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北美聯合律師事務所(North America Immigration Law Group; Chen Immigration Law Associates)是一家從事美國移民的律師事務所,致力於代表來自美國50個州的公司、研究機構和個人,針對I-140移民申請提供法律服務。 我們專精於職業移民申請,並在下列移民類別保有高成功率的證明記錄: EB2-NIW(國家利益豁免)EB1-A(傑出人才)EB1-B(傑出教授/研究員)

我們所累積的上萬件I-140批准通知讓我們對美國移民局的裁決趨勢有著前所未有的洞察力
擁有上萬筆的EB-1A,EB-1B和EB-2 NIW批准紀錄,我們對USCIS判決I-140案件的方式有著豐富的第一手資料。 由於USCIS會不斷改變對EB-1A,EB-1B和EB-2 NIW類別的裁決標準,我們事務所累積的龐大成功案例數據庫能提供您前所未有且透徹的USCIS裁決趨勢。 我們仔細分析我們所有案例的數據,將分析結果應用於為客戶提供最新的建議,並隨時調整我們的策略,使我們與美國不斷變化的移民法規局勢保持一致。 與我們合作,您可以隨時得知重要的更新、策略和資訊,讓您可以對您的申請做出最明智的決定。

我們已經成功幫助過上萬位背景和條件與您相似的客戶
我們經手過眾多的成功案例。無論您的條件、背景、專業領域、簽證身份或國籍為何,我們極有可能已經幫助過數百名甚至數千名和您相似的客戶。 我們的客戶通常對我們能如此了解他們的研究和工作感到印象深刻。 我們的洞察力和理解來自於我們已經處理過許多與您條件類似的案例,這使我們有能力為每份申請量身訂製最佳策略。

許多客戶都是因為他人的推薦而與我們接洽
多年來,我們事務所吸引了許多新客戶與我們合作,他們全都是基於我們的口碑、他人的推薦以及朋友和家人所分享的愉快合作經驗而選擇我們。 我們以我們的聲譽自豪,也努力確保我們提供令人滿意的綠卡申請服務給每位客戶,讓客戶樂於與他們的朋友和同事分享經驗。 這就是為何截至2025年,我們累積的批准案件總數已從2013年的600件成長至超過58,000件。

北美聯合律師事務所 2020 年至 2023 年EB1 / NIW 案件批准數據

顧客見證

Three of my friends who already got green card in EB1 category with the help of Chen immigration recommended me to contact this firm. They gave me free evaluation and approve and refund policy for my EB1B. I don’t know about other firm but I can say that I had a very good experience with Chen immigration. My attorney guided me on every single step and never got irritated even if asked same question several times. I got the answer of all my questions within 24 hours of time. As they promised, they wrote very strong letter of recommendation and drafted my petition within timeline. I was impressed the way they presented my case in the petition and as a results my case got approved in 7 days. I would strongly recommend Chen immigration to anyone trying to get green card under EB1 category. As I heard from my friends and I also experienced that they are the best with impressive team of attorneys. Thank you so much Chen immigration. It would not have been possible without your help. You are doing really good job. Keep it up !
Highly Recommended !!!!

- Dr. S. R., Assistant Professor

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

My EB1B I-140 got approved within 10 business days. I have worked with Chen Immigration Team from North America Immigration Law Group for 4 months before submitting my application. They were extremely thorough, meticulous and prompt with their service. They drafted all the necessary letters (employment verification, recommendation letters and petition letter) within the agreed timeline. They helped me to choose potential recommenders and were always quick to answer any of my questions. They are very professional and definitely know what they are doing. I will definitely recommend Chen Immigration Team to anyone who is planning to apply for Permanent Residency Status in USA.

- B., Scientist

Thank you to the North American Immigration Law Group/Chen Immigration and Attorneys for their unwavering support and help in helping my secure my I-140 approval under EB1A and also under NIW. Their service was professional and timely. They answered my million and one questions with patience and worked with me on every stage of the process. They helped draft the letters and were open to edits and comments from me. What I also liked was that they were open to receiving suggestions from me to help strengthen my case especially when we were responding to our RFE.
Thank you to this team for working diligently and patiently with me to help build my case and get the EB1A petition approved.
I highly recommend them.

- S. V., Assistant Professor

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

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

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Success Stories: Without RFE, a PhD Candidate in the Field of Biomedical Engineering Secures I-140 NIW Approval with the Help of Our Expert Team

“I would like to thank you for preparing my application! The petition letters you drafted, along with the recommendation letters, are very helpful. My questions have always been answered promptly. Overall, the whole process was fast, smooth, and well-guided. Thank you so much!”

Approved in 360 days

State of Residence: Wisconsin

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Success Stories: In Just 1 Month, 22 days, an Indian Research Scientist in the Field of Public Health Secures NIW Case Approval with the Help of Our Expert Team

“Thank you for your notice. Your services have been exceptional.”

Approved in 52 days

State of Residence: New York

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Success Stories: NIW Petition Approved for a Food Technologist – Quality Assurance from Nepal in the Field of Microbial Food Safety, Thanks to Our Team’s Efforts and the Premium Processing Service

“Great Work! Completely met and exceeded my expectations. They were swift to respond and also made sure to verify all documents and information precisely. All issues were instantly resolved and any confusion or issues I had were immediately addressed. I would recommend it to everyone.”

Approved in 49 days

State of Residence: Tennessee

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Success Stories: NIW Petition Approved for a Researcher from Togo in the Field of Nutrition Without Any Request for Evidence [RFE], Thanks to Our Team’s Dedication and Guidance

“I appreciated the work you did, especially the promptness with which you responded. Thank you so much for your kind words and support throughout the process. I’m thrilled to have my I-140 NIW approved, and I truly appreciate your expertise and guidance.”

Approved in 290 days

State of Residence: Togo

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Success Stories: A Senior Research Engineer from China in the Field of Wireless Communications Achieves EB1A Case Approval in Just 19 days with the Help of Our Assistance and Premium Processing

“Thank you team! It has been a great pleasure to work together, and thank you so much. This cannot happen without your professional and great effort.”

Approved in 19 days

State of Residence: Texas

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Success Stories: A Researcher in the Field of Electrical Engineering Successfully Obtained His NIW Petition Approved

“I am writing to express my deepest gratitude for your outstanding support and guidance throughout my EB2 NIW petition process. Your expertise, dedication, and professionalism were crucial in ensuring a smooth filing and, ultimately, a successful approval. A special thanks to Attorney Lei Lei for invaluable assistance, patience, and meticulous attention to detail. Your insights and strategic approach made a significant difference in strengthening my case. I truly appreciate the effort and dedication you and your team put into every step of the process. I am incredibly grateful for your exceptional service and unwavering support. I will gladly recommend Chen Associates to anyone seeking immigration assistance. Thank you again for everything!”

Approved in 93 days

State of Residence: Alabama

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Success Stories: In Just 2 Months, a Chinese AI Engineer in the Field of Machine Learning Systems Secures NIW Case Approval with The Help of Our Expert Team

“That’s great news! Thanks for handling my case with care and efficiency.”

Approved in 60 days

State of Residence: California

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Success Stories: NAILG Helps Biomedical Scientist from Zimbabwe Achieve NIW Approval

“I am extremely grateful to the Chen Immigration for their professionalism and expertise when I filed my EB-2 NIW petition. They were very helpful and answered all the questions I had during the process. In addition, they compiled an excellent petition packet which resulted in my case being approved with no RFE. I definitely recommend the team!”

Approved in 297 days

State of Residence: Massachusetts

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Success Stories: NAILG Assists Geotechnical Engineer in Securing NIW Approval for Advancing Deep Foundation Systems and Infrastructure Safety

“I am extremely satisfied with the exceptional service provided by the North America Immigration Law Group. Their expertise and meticulous approach in preparing my EB-2 NIW petition made the entire process smooth and stress-free. They effectively highlighted my contributions, ensuring my case was presented in the strongest possible way. Thanks to their guidance and professionalism, my petition was approved efficiently. I highly recommend NAILG to anyone seeking a reliable and knowledgeable team for their NIW petition.”

Approved in 65 days

State of Residence: Kansas

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Success Stories: We Helped a Ph.D. Candidate from Thailand in the Field of Digital Economy Achieve NIW Approval in Just 1 Month, 25 Days with Our Intelligence and Guidance. Also, Thanks to the Premium Processing Service

“Thank you all so much for the preparation, hope I can get the good news from the USCIS.”

Approved in 55 days

State of Residence: Thailand

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Success Stories: NIW Petition Approved for a Ph.D. Candidate from Pakistan in the Field of Civil Engineering, Thanks to Our Team’s Dedication and Guidance

“Thank you for your excellent service. The entire process of composing the petition letter was quite enjoyable. Every detail ran smoothly. Each of the responses received from the Attorney was highly informative and well directed. Overall, I am extremely satisfied with your service. Thank you.”

Approved in 297 days

State of Residence: Texas

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Success Stories: Biostatistics Expert Secures EB-1A Approval with Our Law Firm’s Assistance

“Thanks for all the efforts!”

Approved in 37 days

State of Residence: Massachusetts

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Success Stories: Despite a Request for Evidence [RFE], Our Team Successfully Secured NIW Approval for a Full Professor in the Field of Chemistry

“I want to express my profound gratitude to you and the Firm for this wonderful news of the approval of my I-140 petition. Your passion, dedication, dexterity, and professionalism made this possible. Even when it looked gloomy, you reassured me that the final result would be good. The manner in which you handled the appeal gave me the confidence that you are doing the needful. I am really grateful and very proud of you. Surely I will be glad to recommend your firm to my friends who will be interested. I will not have a problem with you sharing the success story in the manner you have stated. Once again, a very big thank you.

Chen Attorney has shown a lot of professionalism in preparing my case. They painstakingly look at every detail with the goal of getting the best results. They are very timely in attending to the various stages involved in the case preparation. I must commend their efforts.”

Approved in 521 days

State of Residence: Nigeria

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Success Stories: NIW Petition Approved for a Senior Scientist from China in the Field of Pharmaceutical Sciences in 1 Month, 21 Days, Thanks to Our Team’s Dedication and the Premium Processing Service

“It has also been a great experience working with your firm.”

Approved in 51 days

State of Residence: New Jersey

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Success Stories: A Chinese Ph.D. Candidate Working in the Field of Computer Science Gets I-140 NIW Approval with Our Assistance

“The team is responsive and professional. I am very happy with the entire process!”

Approved in 50 days

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