declaration form, #13/Paying Taxes

[immihelp]

To whom it may concern,
I am planning my travel to Russia and back this spring. On the way back to US I will bring $10000 or more. I am aware that I will need to file Form 4790. My question is: do I have to pay taxes on this money when I enter USA?

Thank you

[immihelp]

No.

I am assuming that you already paid taxes on the income you received in your country.