Yes, as one design, but there are several out there.
I don't know if I would like them funded by the government, as they seem to have enough funding. but I would like to review the regulations regarding nuclear power, and stick to the science. We seems to have a lot of fear based regulations rather than science based regulations.
“They blinded me with science”. To “them” science don’t matter. Only control matters. But yeah, the molten salt (sodium) is, as you say, just one of many designs being considered. But, I won’t be filing an application anytime soon. ;-)