急问 我和我老公的I-131都approved 了，我们收到的回美国时间是 .“Presentation of the orginal of this document prior to October 02,17 allows a Customs and Border Protection Inspector at a port-of-entry to prole the named bearrer, whose photograph appears hereon ,into united states based upon urgent humanitarian reasons or significant public benefit.” 意思是10/02/17前这段都可以回国，只要在10/02/2017 前回美国就可以了吗？ 回国大概能呆多久？能回国几次， 谢谢
