I think it should be mandatory that the state in which the nuclear waste is created should be required to store it.
Yes, because storing nuclear waste in an area north of the snow line is a really great plan. Yes, because storing nuclear waste in areas with significant rainfall, near the ocean, and with high water tables is a really great plan. Irrational fear bonus: near population centers, high density population, et cetera. And... cue terrors of radiation!