I think the US would rather activate a different proxy vs China first, rather than having to be reactive
the US’ biggest geopolitical liability right now is that Israel holds all the cards, and chooses whether their response to Iran is designed to trigger a wider war with Iran or not. America can’t start thinking about where the next proxy war starts until they know how the Iranian-Israeli standoff evolves.
all the Biden admin have standing between them and full on war with a potentially nuclear foe is Netanyahu’s promises that he would never ever be a naughty boy
you’re underestimating the willingness of the conservative movement, whether Donald J Trump is at its helm or someone else, to simply rule by decree because they know the Dems are unwilling to stop them