Reply

父母有绿卡，这次想回国7-8个月，有必要办回美证吗。

-Not need. Occasionally it is OK to stay in China for more than 6 months and less than one year.

在网上看很多人都说一年以上需要回美证。也有文章说超过半年就会被怀疑是否打算长期居住美国。多谢了！