I am a US Citizen, but I think that leaving your country that you have known your whole life has to be very difficult and stressful. My husband is very family oriented and it took a long time for him to get used to not having family around. Your spouse sounds like he is stressed out about moving to a new country and his new life. All of it is completely unknown to him and he may have an concept of life in the US that is not true. (example negative sterotypes) I think that is completely normal and it will take some time for him to get over it. Of course, there are things you can do to help him with adjusting, example set up a phone plan through google voice or vonage where he can call home whenever he wants, setup a plan to help him takecare of his elderly parents, find him activities to keep him busy, help him make friends when he is here. Really listen to his concerns and make a plan for how you can help. Hope that helps! Good luck on the interview!