-Go to the local USCIS Office to apply for the emergency AP. Bring the child's passport, I-485 receipt notice and the I-131 receipt notice, and evidence of emergency (e.g. Dr./hospital diagnosis for the illness).
需要带孩子(未满14岁)一起去吗?
-Yes.
还是直接申请emergency AP, 不知道可以提前多久。