想給在國內的父母辦綠卡， 是B２簽出來辦好，還是在國內辦好？個有什麽利弊？
-If they can get the B2 visa, just come to US and then, apply for the green card after 3 months later. Then, they may get the green card in several months to one year. If they apply for the immigration visa in China, it normally takes one year to two years for the whole procedure.
聽說國內直係親屬綠卡也隻需要幾個月，不知是否屬實，如何在官方網站查國內直係親屬綠卡申請速度／進度？
