Hi! I need to travel outside US next month but my green card still hasn't arrived (It's been 1 and a half month since POE). I've read (also as stated on my Visa) that it's valid as temporary 1-551 for one year. However, the actual Immigrant Visa expired last December 11, 2015. I POEd December 6 (wherein it also got stamped). I'm confused as to which validity I should consider. Does that mean I can travel outside the US with my passport w/ the stamp until December 2016 even if my actual MRIV has expired? Thank you in advance.