keep 綠卡

What is the requirement to keep 美國綠卡? My sister has got 綠卡 and she still has a job in China. Someone told me that she should stay in China less than half year at one time. If you know about it, please tell me. Thank you very much.

所有跟帖： 

• 回複：keep 綠卡 -863211- ♂ (374 bytes) () 04/23/2010 postreply 16:11:51

• read left 綠卡身份保持 回複：keep 綠卡 -usedtobeadoctor- ♀ (63 bytes) () 04/23/2010 postreply 16:25:15

• thank you both. -yma16- ♂ (0 bytes) () 04/23/2010 postreply 18:49:49