In 2014, there was a proposal to cancel the mid-life upgrade of the USS George Washington. This proposal was defeated. The mid-life upgrade cancellations have been part of negotiations to get larger military budgets.
The proposal will be in the mid-March budget plan. The USS Truman was due for a mid-life overhaul and a new nuclear core in 2024. Retiring the Nimitz-class supercarrier 25 years earlier would save about $30 billion. The overhaul costs $6.5 billion and operating the carrier costs about $1 billion a year. The total savings would be over $30 billion spread over 25
SOURCES- Breaking Defense
Written By Brian Wang. Nextbigfuture.com