Many thanks! My main concern is that

It would arouse suspicion and cause unnecessary hassle with an IO upon next entry when they come back in 11+ months if my dad's green card won't scan properly. You see, they have been doing this one-year stay in China thing for a few times now and have so far had no trouble with an IO when they come back. But back on my mind, I'm always afraid they'd be stopped next time. 

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• 回複：Many thanks! My main concern is that -863211- ♂ (781 bytes) () 10/19/2013 postreply 17:55:31

• Good advice! Very much appreciated! -Baby_baby- ♀ (0 bytes) () 10/19/2013 postreply 18:48:45