-Yes.
他们现在拿的还是临时绿卡,不知这样会不会对申请正式绿卡有影响?他们是否需要马上办I-131白皮书?
-They have to apply for the permit reentry and use it to enter US for next travel. If their green card is cancelled, their child's conditional green card will also be cancelled.
Remember: the green card is for them to live in US permanently, not for them to use it as a border-crossing card.