Texan here. We have a nuclear power plant, too. It's pretty legit.
The only thing the federal government has done to make it impossible is to fail to escalate subsidies.
Maybe it's closest to competitive in eastern Europe? Except the cheapest nuclear plants from Russia aren't going to be a thing now.
The only place on planet earth right now where nuclear might be financially sustainable is China, where highly skilled construction labor is very cheap, where they are building dozens of nuclear reactors in bulk, and where regulatory hurdles don't exist on account of their... administrative system.
But that is only my speculation. We don't have insight into their cost figures, and any data released by the CCP has probably been massaged.
They're also far lower capacity factor than the US (whether that's a symptom of lower reliability or of lower costs permitting curtailment is a different matter) and we know of at least two instances of cost cutting and forgery on safety critical parts.