Contact the German Embassy, there may be an office in the South, otherwise via email. Probably what you want to inquire about is a resident visa. I assume that you do not want to work there, so that may make things easier, depending on your age. Basically, if you are moving there to retire, with an income, then doors open. I would also let them know you will be returning to family, if you will be living with them, that also is a big plus, especially if they own there own home. Your Family can help by also inquiring on their end, or by providing a letter indicating living arrangements and such. Basically, the German Government does not want someone they will need to support and may take jobs away from other citizens, they do appreciate extra consumers though. Regarding Social Security, Not knowing your personal circumstance, typically SS is yours, an earned benefit, so unless you have restrictions, I would think you would "take it with you"; of course, contact your area SS office, they can answer those questions. Your passport is yours as long as it is valid, and even then, you can renew it overseas, You can stay out of the Country indefinitely as long as the US Government is concerned (Please mail in any taxes owed) The limiting factor will be how long the German Government lets you stay (90 days without Question, 6 months with a proper visa, longer on a resident visa)