Money transfer

Hello, I am living between two countries. I pay  and file my taxes in the states but my husband does not because I asked my accountant and he said since he is retired and doesn’t have an income overseas and isn’t a us citizen he does not have to pay. He used to file when we lived in the us and he had a green card or a permanent residency card which has now expired. We have been collecting money overseas mostly from my account in the states and from other things. He has an apartment that he wants to sell and send the money to me in the states to buy an apartment. 
I personally don’t have anything in the states  and go stay with my sisters  and I am on state health care. I could never afford care there with some of my health problems. 
if he sends money to our joint account in the states, would that cause any problems for us?