"I expect they're too expensive" is a terrible reason to ban them, though.

It is when it's tied to "and I expect they're going to ask for giant subsidies from taxpayers".

Which nuclear inevitably does, both in the form of direct requests for money and by refusing to pay for adequate insurance to compensate everyone who will be damaged in the event of a meltdown externalizing the risks.

That's not why they were banned, and in any case lifting a ban on building something that nobody will build doesn't seem like good use of legislators time.