I have 3 sets of great-grandparents who emmigrated from Poland. I am trying to get all of their documents but was wondering if anyone else had any useful info on this subject. Only 1 of my grandparents (1st generation born in the US) is alive and both my father and mother are also interested in obtaining polish citizenship/passports as well. Is dual citizenship allowed? Also, I have contacted the law firm Ilan Charsky & Co. with the prelimenary info, but have not heard back from them. Does anyone know if they are reputable or a scam? Any suggestions? Thank you for your time.