比如我2年服务期还有半年到期的时候，可以在中国以绿卡持有人配偶的身份开始申请我自己的绿卡吗？
如果可以，我开始申请绿卡时候是不是就不能再以B2签证来美国了？
或者说我最早可以在什么时候开始申请绿卡？
-You can file I-140 or I-130 any time, but you can not file I-485 or not apply for immigration visa until you staying in China for two years. After you file I-130 or I-140, it is difficult for you to get the B2 visa due to immigration intent.
如果可以，我开始申请绿卡时候是不是就不能再以B2签证来美国了？
或者说我最早可以在什么时候开始申请绿卡？
-You can file I-140 or I-130 any time, but you can not file I-485 or not apply for immigration visa until you staying in China for two years. After you file I-130 or I-140, it is difficult for you to get the B2 visa due to immigration intent.
