Кто-нибудь из Казахстана заполнял налоговую форму?
Оказывается у Айса свое налоговое законодательство США для Казахстана
Treaty Benefits
The U.S. does not have a Income tax treaty with Kazakhstan which you have indicated as your country of tax residence.
Therefore you are not entitled to a reduced rate of tax withholding
Your withholding tax rate is 30%.