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64,000+件。

北美聯合律師事務所 EB1 / NIW 案件批准數據

(2012.01 - 2025.12)
Approval or Refund®
CategoryApproval or RefilingTM
Approved SumSuccess RateApproved SumSuccess Rate
NIW42,04799%5,25897%
EB1A9,21891%4,53486%
EB1B1,48898%44893%
Total52,75398%10,24092%
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顧客見證

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I received my EB1 A I 140 approval notice a few days ago.
Chen Immigration made this possible. it would have been very difficult to pull this through without their help!
They are very thorough in evaluating your case , respond within 24 hours to every questions you post and work diligently in getting petition letter and LOS done in time . There is no doubt in my mind that Chen immigration are the best attorneys to represent your case.
I have recommended several of my friends and will continue to do so. Thank you so much!
- S. S.
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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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I decided to choose North America Immigration Law Group based on some positive feedback and experiences that some of my friends had with. Working with them was great. They are very supportive and professional and they are well familiar with the rules and process. Everything was delivered on-time exactly as they promised. My application was approved in less than 60 days
I highly recommend them to anyone who needs their service, specially for NIW category. I already have referred some of my friends to Chen Immigration Law Services and they are also very happy and satisfied with their service.
- M. M., Postdoc
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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
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One word to define Chen immigration: 'Professional'

First of all, I want to thank the immigration team for their timely and excellent services. They were absolute joy to work with and the team was thorough, experienced and well placed to provide me excellent reviews, advice throughout my EB2-NIW application process. I have already recommended a few of my friends who already echo my sentiments and will continue to refer Chen Immigration services to anyone who seek my advice.
- D. T.
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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
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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: -

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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

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Success Stories: Advancing Human-Centered Technologies: Postdoctoral Fellow Secures EB1A and NIW Approvals Despite RFE

“Thank you so much for your tremendous help in my petitions for NIW and EB1A.”

Approved in 16 days

State of Residence: Georgia

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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: Medical Scientist from Nepal in Biomedical Science Secures EB2-NIW Approval, Overcoming RFE Challenge

“This is fantastic news! I want to extend my sincere thanks to your entire team for their outstanding assistance with my I-140 application and the subsequent I-140 RFE. I truly believe my case wouldn’t have been approved without the dedication and expertise of your professionals.”

Approved in 169 days

State of Residence: Florida

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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: Overcoming RFE! Our Firm Helped an Iraqi Senior Manager of Data Science Secure NIW Approval via Premium Processing

“I’m incredibly grateful to NAILG for guiding me through every step of the NIW petition process, especially when responding to the RFE. It meant a lot to have a team that understood both the technical depth and national importance of my work. Their attention to detail, responsiveness, and strategic framing of my case played a key role in the approval. From initial consultation to premium processing submission, they handled everything with professionalism and care. I highly recommend NAILG to any researcher or professional pursuing the NIW path.”

Approved in 174 days

State of Residence: North Carolina

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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: At the Molecular Crossroads: Biomedical Researcher Secures NIW Approval

“Thank you very much for your continuous support.”

Approved in 520 days

State of Residence: Pennsylvania

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Success Stories: Healing Through Precision: A Dual Triumph in Oncology

“I am very fortunate to have completed the EB-1A and EB-2 NIW case applications with the Chen Immigration Team at North American Immigration Law Group. Ms. Chen’s team is experienced, efficient, and trustworthy.”

Approved in 85 days

State of Residence: China

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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

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Success Stories: A Precision Mind Behind the Lens: EB1A Approved for Fluorescence Microscopy Researcher

“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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NIW Approved for a Researcher Advancing Wireless Networks Despite a Request for Evidence (RFE)

“I truly appreciate your support and guidance throughout this process — it’s been a pleasure working with your team. Once again, thank you for your excellent service.”

Approved in 422 days

State of Residence: -

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Success Story: Just 12 Days to NIW Success! Our Firm Helped a Nepal Staff Scientist Get Approved Swiftly with Premium Processing Service

“This is great news!! I feel very elated to have my NIW approved!!”

Approved in 12 days

State of Residence: North Carolina

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Success Stories: A Chinese Power Systems Research Engineer Secures EB2-NIW Approval in Just Over One Month via the Premium Processing

“Thank you very much for your help! Really excited that my case got approved without RFE. Thank you so much!”

Approved in 37 days

State of Residence: Washington

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