It's a shame we decided nuclear was too dangerous and decided to pump our atmosphere full of carbon instead. I'm glad to see that China is making the right choice, I just wish we could have as well.
The map shows three facilities under construction. I'm not sure that counts as "stopped."
Prior to Watts Bar unit #2 coming online in 2016, the previous reactor was Watts Bar unit #1 in 1996. So that's one reactor in the past 20 years, and 23 years since we last opened a new plant.
20 years between plants isn't that big a deal. They're not building houses. Nuclear reactors take decades to built. It's one of the reasons they're so expensive.
Either way, new reactor construction is not currently a significant source of new generation capacity in the US, and so I think it counts as "basically stopped".
They might be serious about shutting down their coal burners. That is a real commitment to clean air and energy security - they are doing something different. Minor compared to the current business-as-usual perhaps, but they make iterative change work.