We’re the ones seeking to cap our contributions. The formula currently doesn’t allow for any one country to pay more than 22% with America the only one actually paying that much, save for the institutions we’ve cut off. For UN peacekeeping we’re actually assessed at 27% but Congress capped that to 25% back in 1993.
All of our foreign policy prior to January 20th 2025 is in a state of flux. Officially, Congress cares, but the first 7 or so months of this year have been enlightening in a strange way, and with our President taking the lead, there is a strong possibility that Congress will not care if the possibility of the PRC paying more comes up in any policy discussions.
https://betterworldcampaign.org/us-funding-for-the-un/un-bud...
If any other country wants to step in and fill the gap, I don’t think Congress will care.