Yes, although it's a bit of a roundabout process because of how we set up the project originally.
If you have a non-US shipping address, and you want a US-only reward:
1) Choose the "No reward" option, and pledge the amount of the reward you want + $10 for shipping. For example, if you want the $50 "PRO" reward, pledge $60.
2) Email email@example.com with your address, name, and the reward name.
We realize this is inconvenient, but apparently KS doesn't allow us to add the international option after the project is already launch.