Pointing at the WHO when your own "house" is not in order is a waste of time.
Ironically, cutting funding for such an organization by claiming they are under control of another nation is going to do exactly just that. What role the WHO has in its current form is something that can be tackled after this virus is under control, like most things from the US government this is merely a diversion to cover up their own short comings.
Yet to see any EU nation making a big deal out of it right now in the middle of a crisis, than again most EU nations are actually pre-occupied with dealing with the crisis and no holding pointless press conferences.