請教一下,母親2011年拿到綠卡,最後一次憑綠卡來美國是2014年3月。她隻待了一個月就回中國了,因為父親生病需要照顧。最近父親去世了,她想來美國和我一起生活。估計憑綠卡入境會有麻煩,這種情況怎麽辦?懇求大家的建議和指導
-Her green card has been void automatically, so she cannot use it anymore. She needs to abandon her green card and then, apply for the B2 visa to enter US. Then, you can sponsor her green card again as you did before. See this link for green card abandonment in China (English version):
or this link (Chinese version):