请教8老师,Priority DAte是什么? -It is "排期". There is not 排期 for the immediate relatives of a US citizen (e.g. parent, spouse and unmarried minor child). 是不是从这天起,一年内必须交齐全部资料给签证中心,过期就要重新交费? -Irrelevant. 谢谢8老师费心