I have a question about visas and citizenship. I know the girls that come here on student/work visas have to travel back to their home countries to renew every so often. What about if someone just wants to come here to live? One of my Mom's neighbor's elderly mother came here last year to live, supposedly permanently, from Germany. She's in her 60s (at least) and has to have dialysis every other day. The Mom lives in my apartment complex and the daughter and son in law live behind my Mom a few blocks away. How will the visa stuff work for the Mom/MIL? Would the Mom/MIL have to already have dual German/US citizenship for this to work out?