As of 2022, the Toyota Prius is exclusively made at the Aichi factories in the Aichi prefecture in Japan. This means that the vehicle does have to be shipped overseas in order to reach an American audience.
While this might feel a bit frustrating as a consumer attempting to lower their carbon footprint, remember that many gas-powered vehicles are shipped in from overseas, too. As such, you’ll still be making more of an impact than someone who drives, say, the Jeep Renegade. Remember, you can only do what you can do!