我父母是綠卡持有者。去年6-17-2014回國。原本打算去年11月返回美國。但是我母親10月底生病住院。住院期間經曆骨折,膽囊結石切除膽囊。今年4月出院。但因使胸骨骨折,還是不能長時間久坐。現在快要到一年了,是不是6-17-2015以前不會來,綠卡就作廢了了?
-Your father has to return to US before June 17, 2015. But if your mother can not return to US on time, she needs to go to the US Consulate to apply for the SB-1 visa by providing the evidences of her illness which prevents her from returning to US on time. SB-1 visa can reinstate her green card.
怎樣才能保住綠卡?