Am i going to be safe?

ok, i was arrested and im on probation for 2 years. I was charged with a felony...possession of heroin. I was wrongly arrested, and tried my best to fight it, but ended up with probation, and so i have a record and i cannot work my job ( nuclear engineering) i had a job set up for when i was finished college. my life is completely ruined. im planning on going to live in Ukraine because of the money exchange rate.... i have enough money and resources to not have to worry about working ever again if i go there. my question is, is the US government going to be looking for me or flag my pport when i skip probation, or do they have better things to do than to further ruin a wrongly accused 21 year olds life???