還是可以等到我老公拿到綠卡後再申請?
-This is also OK. See above answer.
他們能否拿到綠卡後繼續在加拿大完成大學學業?
-Yes, but they may need to get the reentry permit (RP) to stay in Canada if they need more time to study in Canada (RP can allow them to stay in Canada for > 1 year < 2 years).
2. 我因有特殊情況想等幾年後拿綠卡,如我想要作為老公的dependent來申請,可以最遲隔多久申請?
-You can file I-485 any time if you are phyically present in US.
有沒有時間限製?
-No.
除了結婚公證,孩子們的出生公證,填寫485,還需要準備其它材料嗎?
-See