To compound the problem, the 1982 law only allows the money to be spent on a permanent solution, such as Yucca, and it can't be used for what many experts say is the best interim solution: taking spent fuel out of increasingly crowded cooling pools and encasing them in concrete and steel. So, nuclear companies have begun doing that themselves -- and have been suing the government for not holding up its side of the bargain. The companies have filed dozens of lawsuits, for $6.4 billion in total claims, according to figures maintained by the Department of Justice. The government has already paid out $956 million. It's also spent nearly $170 million simply defending itself against the claims.
Source:.propublica.org