Hatzlacha and Mazal to the person looking for the job.
It may be worth your while to follow up with a company that interviewed him or saw his resume and find out what their concerns are. Given the fluent language abilities of the person, it sounds like someone from Antwerp. This is an area of concern to the hiring manager: “Is “Yankel” able to pass the I-9 requirements for employment, or will he spring on me last second that he wants my company to sponsor him. You know what, I’ll take a pass, even if he happens to be Einstein. I don’t have the patience to deal with this”
This might be something to look into, IF the position is still not filled: