USA, Canada /
U.S. Citizen to Study in Poland on U.S. Passport for Over 3 Months? Problems? [46]
If born in America, parents would have to register your birth in Poland. If they did not you would need to confirm citizenship. Note: I am assuming your parents were born in Poland and /or have Polish citizenship and passport. I do not know the process of confirming but you have it anyway. Polish blood = citizenship. The process is more complicated if your parents are descendants of immigrants themselves.
I heard of this silly law or stories of this law where they hold you back. I however, born in Poland and having citizenship have travelled to Poland for the past 4 years on a Canadian passport and had no trouble even though they knew I was Polish. I have not stayed over 3 months however.
I'll be fined/jailed/barred from ever returning to Poland and the EU..
No offense, but that is ridiculous, you are a citizen not an illegal African or some other. I have never heard of anyone getting banned let alone a citizen.