Both children are US citizens, not Chinese citizens. Hence, they do not need 户口! But they need something called Chinese Green card or the like to LEGALLY stay in China. Oh, the above is simply my guess.
【在 B******1 的大作中提到】 : Both children are US citizens, not Chinese citizens. Hence, they do not need : 户口! But they need something called Chinese Green card or the like to : LEGALLY stay in China. : Oh, the above is simply my guess.