Hello and welcome to Just Answer. No attorney-client relationship or privilege is formed by speaking to an expert on this site, the answers are for general information. By continuing, you confirm that you understand and agree to these terms.
If you had an EAD and it expired you should immediately stop working. The USCIS has a policy that they overlook unauthorized employment for up to 180 days, but don't push it. if you reapply your EAD should be approved with no issues.
With regards ***** ***** question on starting of a small business. Based upon your J-2 status, you can open a company to do business importing form Vietnam, However, there is a catch, the law states that you cannot work or perform any work for, or act on behalf of the corporation in any manner without an EAD.
You can incorporate the business, and be a passive shareholder of the business, may be on the board and attend meetings; but you may not participate in the business until you have an EAD.
You can volunteer, if you participation is truly voluntary. You cannot be compensated (until you have an EAD). Volunteering for a business in which you own equity is a legal slippery slope, but I think it unlikely that they would find out.
So, in order to conduct business, before you have an EAD, there would need to be someone else to hold the position of owner/President of the company, and be responsible for business operations. You could not take a salary or be compensated in any manner until the EAD is issued.
It was a pleasure assisting you today, and I would appreciate if you would rate my service, so I will receive credit and payment for my work. After you rate the question you can ask follow up questions, and you will not be charged any additional money for the follow-up questions.