Chernobyl may have done a lot to inflame cultural imagination of what could happen in the worst cases, but the US still had its own high profile disasters like Three Mile Island.

https://en.wikipedia.org/wiki/Three_Mile_Island_accident

I would hesitate to call Three Mile Island a disaster, it was certainly a nuclear accident. A reactor was damaged, but no one was injured and an absolutely miniscule amount of radiation was released. The other units at the plant continued to operate until quite recently (and might actually be starting up again).