Trump has no idea how much money it would take to redesign Kennedy and Enterprise, the next two carriers, for steam. The reactors would need to be redesigned, the fresh water desalination plant greatly increased in capacity, much of the deck and below space redesigned, etc. Instead of saving money, it would cost even more to revert to steam for these next two carriers.
Futures carriers reverting to steam is about as credible as Trump pricing out some Boeing F/A-18s to replace F-35s.
Boy, exactly. That would be a MAJOR design undertaking. Not going to happen.
I believe this is the least of worries. They will get this stuff ironed out.