关键是在于中方人士没有了解英语的Marriage License和Marriage certificate的区别。让他们翻译这一段：
What's the difference between a "marriage license" and a "marriage certificate"?
A marriage license is a piece of paper that authorizes you to get married and a marriage certificate is a document that proves you are married.
Typically, couples obtain a marriage license, hold the wedding ceremony, and then have the person who performed the ceremony file a marriage certificate in the appropriate county office within a few days. (This may be the office of the county clerk, recorder or registrar, depending on where you live.) The married couple will be sent a certified copy of the marriage certificate within a few weeks after the marriage ceremony.
摘自 http://www.nolo.com/legal-encyclopedia/marriage-requirements-licenses-ceremonies-faq-29142-3.html
License是证明你可以结婚，Certificate是证明你在婚姻中。
你们county的结婚证书是把结婚license和结婚certificate设计在一张纸上的，你们结婚后主婚人在上面签字了，marriage certificate 就生效了。
你的证书上指的是license在多少天内有效，没有说certificate会失效。你在license 规定期限内结了婚（有日期为证）所以你是在婚姻中。
