I see no reason why would you disqualify any ICO because of the country of origin?
If the project is strong, why would you not invest?
That is just silly.
It is not that simple. For example, if you are a resident of Iran and the authorities notice that you have crypto-links to Israel, then there is a small chance that you may be branded as an Israeli spy and detained for further investigation. Just saying that there can be unwelcome scenarios...