回复:一年有效是你未交前,交后永不过期, see:

http://www.kkeane.com/aos-faq.shtml

How long is the I-693 valid?
The I-693 expires after one year, if you have not filed it with USCIS. It does not expire any more after filing, regardless of how long USCIS takes to process your case.


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