So then you build a hundred such plants
One of the biggest costs of building a nuke plant is doing all the studies and paperwork necessary to get approval, plus all the opposition from all the homeowners who would be nearby. It needs to be built fairly close to the electricity consumers, because transmitting electricity over hundreds of miles is expensive
Contrast that with a nuke plant dedicated to making fuel. It could be situated in the middle of one of our larger military reservations out West (no nearby neighbors to complain). You could co-locate multiple 2GW reactors in one place (reducing planning, construction, and operation costs). You could use the waste heat as process heat for ethanol production and coal-to-gasoline conversion. Set up a big set of pipelines to transport the fuel to the rest of the country
But how certain are we of uranium reserves and what is their location?