Success Stories: NIW Approval Confirmed for a Postdoctoral Researcher in Chemical Engineering from Vietnam Without RFE, Credit Goes to Our Team at NAILG


Client’s Testimonial:

“Thank you for all your hard work during the preparation I-140 time.”

On February 26th, 2023, we received another EB-2 NIW (National Interest Waiver) approval for a Postdoctoral Researcher in the Field of Chemical Engineering (Approval Notice).

General Field: Chemical Engineering

Position at the Time of Case Filing: Postdoctoral Researcher

Country of Origin: Vietnam

Country of Residence at the Time of Filing: South Korea

Approval Notice Date: February 26th, 2023

Processing Time: 2 months, 29 days

Case Summary:

An expert in chemical engineering from Vietnam came to our firm for her National Interest Waiver (EB2-NIW) application. Her proposed endeavor was to continue her research on developing state-of-the-art characterization approaches for identifying ideal materials. This would aid to create electrochemical materials for sensors, energy storage, and electrocatalysts.

Going through the details of her research, it became evident to us that her research endeavor is of great importance because it directly addresses the need to sense dangerous gasses like nitrogen dioxide (NO2) in the environment. Thanks to her efforts, scientists around the world are better equipped to take on climate change action and ensure the health of humans and the environment.

Not only this but more specifically her proposed endeavor also has broad implications for the United States where accurately detecting diseases is of the utmost importance in preventing and slowing events like pandemics. As we have seen over the past few years, the COVID-19 pandemic has had a devastating effect on the U.S., taking the lives of over 1 million Americans. Simultaneously, her work on CDs and sensing devices plays a significant role in curbing disease outbreaks and is thus essential to the health and safety of the U.S. population.

She has also completed at least 6 reviews to date and her research has resulted in 18 peer-reviewed journal articles (10 of them first-authored) which have been cited a total of 595 times according to Google Scholar, thereby demonstrating that these publications are widely recognized and relied upon in the field of chemical engineering. Furthermore, her study has received funding from the Ministry of Science and ICT in South Korea and the Ministry of Education.

Along with this, she has pursued research directly related to her proposed endeavor of developing state-of-the-art material characterization approaches for 9 years which has furnished her with the necessary expertise to continue her work here in the U.S. This is why she could also easily obtain 2 letters of support from recommenders who saw the value in her work and wished her to continue her research in the country.

These factors were key in getting her case approval and that too in less than 3 months’ time. We are thankful to her for choosing our firm and we wish her all the best in her future endeavors.

North America Immigration Law Group (Chen Immigration Law Associates) is a U.S. immigration law firm dedicated to representing corporations, research institutions, and individuals from all 50 U.S. states regarding I-140 immigration petitions. We specialize in employment-based immigration petition and have a proven record of high success rate for the categories of: EB2-NIW (National Interest Waiver), EB1-A (Alien of Extraordinary Ability), EB1-B (Outstanding Researcher/Professor) and O-1 (Alien of Extraordinary Ability).

Our Ten Thousand I-140 Approvals Provide Unprecedented Insight into the USCIS Adjudication Trend

With more than 16,000 EB-1A, EB-1B, EB-2 NIW and O-1 cases approved, we have first hand information on the manner in which the USCIS adjudicate I-140 cases. As the USCIS has constantly changed its adjudication standards for the EB-1A, EB-1B and EB-2 NIW categories, our firm's huge database of successful cases gives you unprecedented insight to USCIS adjudication trends. We carefully analyze the data for all of our cases and apply the results of our analyses toward giving our clients up-to-date advice and adapting our strategies such that we remain on par with the ever-shifting landscape of immigration law in the U.S. With us, you will always have access to important updates, strategies, and information so that you can make the most informed decisions about your case.

We Have Helped Hundreds and Thousands of Clients with Credentials and Backgrounds Similar to Yours

With our exceedingly large number of successful petitions, no matter what credentials you have, no matter your background and field of expertise, no matter your visa status or nationality, chances are we have helped hundreds or even thousands of clients just like you. Our clients are usually impressed with how well we understand their research and work. Our insight and understanding stems from the fact that we have handled many cases with elements similar to yours already, and this helps us devise the best strategies for each individual petition.

Vast Majority of Clients Came to Us Because of Referrals

For years, our firm has attracted new clients based solely on word of mouth, recommendations, and the positive collaboration experiences shared with them by their friends and family. We take pride in our reputation and work hard to ensure that we provide a green card application experience that our clients are happy to share with their friends and colleagues. That is how our approved cases grew from 600 in 2013 to over 3,500 in 2019.

If you are interested in filing the green card, please send your CV to for our free evaluation. Our attorneys will email you back with the evaluation result within 24 hours.

Approval Notices:

Success Stories:


Free evaluation email:

Tel: 888.666.0969 (Toll Free)

To see more clients’ testimonials and approvals, please refer to:

Client's Testimonials

Approval Notices

To Learn More About Your Options CLICK HERE

Copyright © North America Immigration Law, All Rights Reserved.