Well if it was earned in a year when you pay US tax, the taxman might want a slice, but the immigration people don't care where it came from (assuming it isn't from crimes involving moral turpitude).
As a Turkish citizen, i think i dont have to pay tax for the USA ?
Yes dear Simon 100% legitimate income from Google Admob.
Thank you for your answers dear Vlad and Simon. Shall I show all of my balances or just receiving banking account from admob + 30 k ?