I doubt that the US is buying from Russia—you know, the country/government which it threw sanctions on in all sorts of ways—because "it's cheap".
Recently a ban on importation was started, and it included a couple of billion for more processing facilities in the US:
* https://archive.is/https://www.nytimes.com/2024/05/14/climat...
It's a supply chain issue that took some time to sort out:
* https://www.gov.uk/government/news/new-nuclear-fuel-agreemen...
* There are uranium enrichment facilities outside Russia, even in Europe
* There's uranium outside Russia, even in Europe (look at Czechia https://en.wikipedia.org/wiki/List_of_countries_by_uranium_r...)
So, let's build a plant.