The US does not have a permanent storage solution for spent nuclear fuel and highly radioactive waste.
See https://en.wikipedia.org/wiki/Yucca_Mountain_nuclear_waste_r...
See https://en.wikipedia.org/wiki/Yucca_Mountain_nuclear_waste_r...
If politicians ever decide it has become an issue, the storage facility can be constructed.
But there are other deep geological repositories around the world.[1]
[0] https://en.wikipedia.org/wiki/Waste_Isolation_Pilot_Plant
[1] https://en.wikipedia.org/wiki/Deep_geological_repository