Maybe his green card expired.
green car d dont expire,, its for life,, you get it for 10 year and the card exprire but it doenst matter stil permanent resident for life unless murdered someone or commited very heavy crime and even then you can fight for the green card to remain in custody of yours
green crd hoders are just like citizen beside they cant vote to presidento of americana or work for goverment in americana....beside that they are exactly equial to citizen including the ability to bring anyone of releative of theirs to americana with zero problems and basicaly making them have green card...
2 year to 3 year after green card held by fella....that fella can and in 99.99 % cases becoime citizen and then it is exactly a duplica of americano citizen native from birth
so green card was not the reasn friend
gh15 approved