@captmdismail , salam aliquom
Is this issue settled or do you need more help on this? I am in general agreement with my colleague @Vanessa A , based on the info provided by you. I wanted to be assured that this is all. I say this because absent more details on your son ( for example , when he entered the country, when did he switch to OPT etc. ) the answer may be different or at least slightly modulated. Also is he asserting US-Bangladesh tax treaty benefits ?
If you do not wish to discuss details in this public forum, you can always PM me ( just no PII-- Personally Identifiable Information , please )
pk
