you know more about our Nuclear Power development programs than over 300 million Americans (just need to read the links) ;-)...
but as to your concern about funding...back in the early days, the government needed to fund companies who had NEVER built such novel devices (i.e. Reactors)...lots of unknown risk...insurance, etc....now the situation is more of a "Cost Sharing" with investor groups (e.g. Bill Gates' "Terrapower" + GE-Hitachi on the 'Natrium' Fast Reactor Program being built in Wyoming)...
Money, at the very least, is needed to assign DOE/NRC resources to such projects so that the licensing effort keeps pace with development...there may be other areas of direct funding to private enterprise, but I'm not up to speed on the details...just know that billions of your tax dollars are going to Nuclear Reactor developments (plural).
At this stage of the game, those developments are NOT being hamstrung for lack of funding and should proceed according to the schedule shown in one of my links.
Am I making this any clearer for you?...i.e. the Biden administration is fully supporting the needed Nuclear Power Advanced Reactor developments...while, btw, providing sufficient funding to keep existing reactors operational...can I hear a "Thank You, Joe!"?