Another tourist that can change it for him maybe for a bit less than the going rate.He could also hold on to them and use his atm card and credit cards.
I married a Thai lady 17 years ago. This was based on a Fiance visa granted in the US embassy. I would assume it still works that way. You need to be legally married in USA .that will grant her entrance in and out of USA.
This with solid working positions are denied everyday it's not an easy process. Some people get it easy and some people never get it in their lifetime I've seen it happen to people with solid positions in the community.