本人美國公民，父親已過世，想申請母親綠卡來美。如來美後或在國內申請各需多長時間能批。
-If she files I-485 in US, it normally takes about 6 months to one year; if apply for the immigration visa in China, it normally take one to two years or more.
老母已經80，身體還可以。但也有一些常見老年病。有可能不批嗎？
-Fine.
移民對年齡和健康狀況有要求嗎？
-As long as she has no infectious diseases (傳染病), it will be fine. No age limitation.
多謝。
