但是现在没有任何反应,没有收到移民局更改他离境日期的回执。 - I don't think you will receive a receipt or the like. 我们该: 3)如果最后都没有任何消息,会对岳父下次签证有影响吗? - Should not be. Keep a copy of everything you mailed, for visa application and admission to US, just in case.