我給母親申請green card，父親已去世。母親找不到她當年的結婚證了，所以國內不給她辦結婚公證。母親申請green card 的材料中是否需要有她自己的結婚證 or 結婚公證呢？
-Not need her 結婚證 for green card application.
我曾經作為sponsor幫助我的公公婆婆申請到 green cards，因為我先生的收入不夠。我還能再作為sponsor幫我媽申請green card嗎？
-Yes. By the way, you are not the sponsor for your 公公婆婆 green card application, but just agreed to use your income to support them (you are not qualified for their sponsor, but your spouse is).
謝謝幫助。
