Here's my case'
I came to the U.S on a green card. My father is a naturalized u.s. citizen. Around 1996 he approached the USCIS and they had told him that the only way I(myself) can become a citizen is to file for a LPR and go through the whole process to become a citizen.
So in 2005 he had filed for it and I got my LPR in 2007.
About last month he was talking to an attorney and he said I(myself) am qualified as he(my father) has resided in the U.S. for more than 10 years and that automatically qualifies ME for a DERIVATIVE CITIZENSHIP i.e. to acquire a citizenship through a naturalized u.s. parent.
I filed for a passport and after going through a 'discussion' for couple of hours with the officer I was finally issued my passport.
Now my question is what should I do with my Green card? do I need to inform the USCIS about my new status..? If I need to travel outside the country will I still be able to use my green card (just curious)..? Will the system automatically update itself about my new status...?
I also understand that the U.S. Supreme court holds that a u.s passport holder is a lawful u.s. citizen.
Appreciate any help guys....

