North America Immigration Law Group - specialized in NIW (National Interest Waiver) and EB1 Greencard

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）和 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61,000件。

北美聯合律師事務所 2020 年至 2024 年EB1 / NIW 案件批准數據

顧客見證

The fact I like most about the Chen Immigration and Attorneys is their communication systems and responses. Throughout the whole application process until approval, I had lots of questions in different phases regarding case file preparation, EAD cards, travel with AP, service request etc. What I needed to do was to leave a message in the case management system and got detailed and satisfactory responses in a timely manner.
Their services ranging from the free evaluation at the first day to case preparation and drafting recommendation and petition letters have exhibited high professionalism and standard. I would suggest anyone to retain them for his/her I140 and I485 case preparation.

- S. A., Postdoctoral Researcher

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

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

Words can not describe my level of satisfaction working with folks at WeGreened. They have a rigid systematic approach to submit cases to USCIS (i.e. EB2-NIW in my case).
No hitting around the bush during working with you. Straight forward and logical folks. They throw it into your face when you are wrong, accept it with big heart if they fail. Turn-back time to your questions is within 24 business hours with no doubt at every single step of the progress. Do not doubt for even a single second to choosing them, regardless of your geographical point.

- T. J., Affiliate Faculty

I have to say the team at Chen Immigration Law Associates are very professional and responsive. My I-140 NIW EB-2 was approved recently and I truly appreciate all the patience and efforts that their team did for my case. As a result of this satisfactory experience, I am planning to continue working with Chen Immigration group for my I-485 case. Before applying for NIW, I searched many other lawyers and this firm was the best among them. Good luck everyone!

- A. S., Teaching/Research Assistant

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

Success Stories: NIW Petition Approved in Under a Month for Visiting Postdoctoral Fellow’s Vital Work in Drug Resistance Mechanisms

“I worked with Chen Immigration & Attorneys for my NIW-EB2 petition, and it was approved without any RFEs. Their team consistently responded to my questions promptly and provided detailed, informative answers. All documents were professionally drafted, and they made the entire process smooth and stress-free. I would gladly recommend Chen Immigration & Attorneys to anyone interested in applying for a green card.”

Approved in 26 days

State of Residence: Maryland

Success Stories: Mapping Biodiversity for a Healthier Planet: How One Ecologist’s Research Earned National Interest Recognition

“I am thrilled that my EB-2 NIW petition has been approved, allowing me to continue my critical research in biodiversity conservation in the United States. This achievement would not have been possible without the exceptional guidance and expertise of Chen Immigration Law Associates.

As an ecologist dedicated to preserving fragile ecosystems and endangered species, I needed a legal team that truly understood the significance of my work and could compellingly present its national importance. Chen Immigration Law Associates meticulously documented my contributions—from peer-reviewed publications to real-world conservation impact—crafting a petition that clearly demonstrated how my research benefits the U.S.

Their deep knowledge of NIW criteria, strategic approach to highlighting my field’s urgency (particularly in addressing habitat fragmentation and biodiversity loss), and attention to detail were invaluable. They transformed complex ecological concepts into persuasive legal arguments, while independent recommendation letters from global experts further reinforced my case.

I wholeheartedly recommend Chen Immigration Law Associates to researchers and professionals seeking NIW or EB-1 visas. Their ability to bridge scientific innovation with immigration law is unparalleled.”

Approved in 441 days

State of Residence: China

Success Story: NIW Approved Despite RFE! We Helped a Ghanaian Graduate Research Assistant Secure Success

“My overall experience with Chen’s Immigration Attorney has been good. The web portal is super helpful, and the assigned attorney answered my questions very well and on time. The assigned attorney worked closely with me throughout the entire process to make my application a success. I am immensely grateful to the Chen Immigration Team for the professional and exceptional work. Thank you!”

Approved in 368 days

State of Residence: Connecticut

Success Stories: Navigating RFE: NAILG Guided Expert Through NIW and EB-1A Approvals in Atmospheric Science

“Thank you for providing such professional and excellent service. I will not hesitate to recommend your services to my friends and colleagues. I will also contact your law office again when I need any law services in the future.”

Approved in 102 days

State of Residence: Washington

Success Stories: Teaching Robots to Feel: EB-2 NIW Approved for Researcher Advancing Emotion-Aware AI

“Wonderful professional service! Overall, I must admit that it has been an impressive professional service offered by Chen Immigration.”

Approved in 313 days

State of Residence: Germany

Success Story: NIW Approved Without RFE! Pakistani Associate Professor Achieves Success with Our Strategic Support

“Thank you so much for sharing such wonderful and exciting news with me. I’m absolutely thrilled and incredibly grateful! I truly appreciate the exceptional professional support you provided throughout every stage of my NIW immigration process. From the very beginning, your guidance, clear communication, and attention to detail gave me confidence and peace of mind. Your expertise helped simplify what could have been an overwhelming process, and your responsiveness and encouragement made a significant difference. I especially want to acknowledge your consistent dedication, timely updates, and thoughtful handling of every part of my case. Your role in this successful outcome has been invaluable, and I am sincerely thankful for your efforts.”

Approved in 482 days

State of Residence: Pakistan

Success Story: An Indian Assistant Professor Approved NIW Victory Smoothly with Premium Processing Advantage, Also Thanks to Our Expert Support

“Thank you very much. I had a great experience working with you, and you did an excellent job.”

Approved in 42 days

State of Residence: -

Success Stories: From NIW to EB-1A: NAILG Delivers Immigration Success for PhD Candidate in Computer Science

“Great service! My attorney is also helpful and responds to my questions quickly. Thank you!”

Approved in 458 days

State of Residence: New York

Success Story: Powering Forward — Dual Visa Success for a Research Engineer in the field of Mechanical Engineering

“I’m writing to express my deepest gratitude for your support throughout my entire immigration journey. Starting from my J-1 waiver, to the O-1A petition, and now the successful approval of my EB-1A, you have been with me every step of the way. Your professionalism, dedication, and patience have meant the world to me. I couldn’t have made it this far without your guidance and support. Thank you so much — truly and sincerely.”

Approved in 54 days

State of Residence: California

NIW Approved for a Systems Engineer Advancing AI-Driven Biomanufacturing and Sustainable Food Production Research Following RFE

“My attorney did an excellent job preparing my I-140 petition. Their attention to detail, responsiveness, and expertise made the entire process smooth and stress-free. I highly recommend their services.”

Approved in 203 days

State of Residence: -

Success Story: EB1A Approved Despite RFE! Dual NIW + EB1A Victory for Indian Medical Director via Premium Processing

“It has been a pleasure working with Chen on my EB1A NIW journey. I heard about Chen years ago and hence had the confidence to go with them. I liked their meticulous attitude in preparing the case draft and collecting evidence. Chen has a ton of experience with EB1 and NIW categories. Chen has also been prompt in responding to my queries. I was told the officer who had issued my RFE had only a 30% approval rate. I was nervous due to the recent significant drop in the EB1A approval rate. However, Chen was a great help throughout the process, and I am satisfied with her service. I wish them all the best and endorse her for physicians willing to file an EB1A NIW petition.”

Approved in 15 days

State of Residence: Illinois

Success Stories: An Iranian PhD Candidate’s Path to Success: EB2-NIW Petition Approved with No Request for Evidence

“I had a very positive experience working with the North America Immigration Law Group on my NIW petition. They were consistently responsive (i.e., every question I had was answered within 24 hours), and they followed through on every step they outlined from the beginning, which made me find them trustworthy. After I signed the agreement, they provided access to a well-organized client webpage that made it easy to keep track of tasks, documents, and deadlines. The whole process felt structured and manageable thanks to that system.”

Approved in 562 days

State of Residence: Illinois

Success Stories: NAILG Navigated NIW Petition for Artificial Intelligence and Machine Learning Researcher in Computer Science to Approval

“Thanks for quality service, advice, and efforts.”

Approved in 498 days

State of Residence: Michigan

Success Story: NIW Approved Despite RFE! Bangladeshi PhD Student Succeeds with Our Tailored Strategy

“I had a great experience working with the Chen Immigration team. They were always prompt in answering my questions. I especially want to thank Alexander Bennett for preparing a strong RFE response that led to the approval of my EB2 NIW petition. I highly recommend the Chen Immigration team.”

Approved in 555 days

State of Residence: Pennsylvania

Success Story: In Just 15 Days, A Turkish Hospitalist Achieves NIW Approval via Premium Processing, Also Thanks to Our Assistance

“I wish I had applied earlier, especially given the current priority dates. Many of my residency colleagues recommended Chen Immigration for their professionalism and strong track record of success. They provided thoughtful guidance and helped me present my past and current work in a way that allowed USCIS to clearly understand its significance. The team was kind, responsive, and open to feedback—always willing to incorporate my suggestions into the drafts. It was an important step in my career, and I felt a great sense of relief throughout the process thanks to their support. I’m truly grateful for their help.”