9:30 a.m. to 5:30 p.m. Eastern Time Zone
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）和 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64,000+件。
北美联合律师事务所 EB1 / NIW 案件批准数据
| Approval or Refund® | ||||
|---|---|---|---|---|
| Category | Approval or RefilingTM | |||
| Approved Sum | Success Rate | Approved Sum | Success Rate | |
| NIW | 42,047 | 99% | 5,258 | 97% |
| EB1A | 9,218 | 91% | 4,534 | 86% |
| EB1B | 1,488 | 98% | 448 | 93% |
| Total | 52,753 | 98% | 10,240 | 92% |
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
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.- S. S., Group Scientist
I highly recommend Chen Immigration Team for green card petitions. Thanks a lot for their big help.
I received my EB1 A I 140 approval notice a few days ago.- S. S.
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!
The folks at Chen Immigration know what they are doing and did a fantastic job. They are extremely knowledgeable and helped me throughout the application process. Their letters were of top quality and would recommend them any day for any immigration related matters. Kudos to North America Immigration Law Group's team. Keep up the good work!!!- A. S., Principal Consultant
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'm so excited that my I-140 got approved within such a short time! I do think the North America Immigration Law Group did a great job. They are so patient to answer lots of my questions. The recommendation letters and petition letter are well prepared. That saved lots of my time! I will definitely recommend to my friends, as well as other people who prepare to apply for green card!- X. L., Postdoctoral Fellow
