1. Fission: TMSR-LF1 (a thorium breeder, molten salt research reactor)
Based on US work in 1960s and independent Chinese Sinap work in 1970s. They recently published that they had detected Protactiunium in the salt - a new milestone.
2. Fusion: EAST tokomak
https://www.livescience.com/planet-earth/nuclear-energy/chin...
We would all be better off if the US and China just collaborated.
Republicans on the other hand are hoping somehow that a gutted NRC will pave the way for looser regulations that will help ramp up conventional nuclear fission and nuclear fusion timelines (all efforts invested into by the current president's family and his fellow cronies of course), while abjectly gutting down any progress in renewable energy in the present moment.