I'm calling it now. The US is going to try something like straight up arresting the Chinese athletes at LA 2028 or threaten them with arrest ahead of time to keep them away to allow the US more medals. They'll have this whole circus around it, indictments, a grand jury, all somber and shit. They'll sanction and threaten their athletes, coaches, program directors and all kinds of other people involved and WADA won't do shit at that point other than complain and allow it to happen because they don't want to arrested. They'll either pull it early to hammer on it for 12-24 months or do so after all the planning is done and they can't possibly move the location or pull out of hosting in LA.
What WADA should do is pressure the Olympic committee to force the US to either repeal their law giving them illegal extra-judicial jurisdiction or strip them of the right to host the Olympics. The US congress would never pass a law repealing it after a threat or demand of course so they'd simply lose the Olympics which is fine. They could also demand the Olympics pass a rule that says if a country (unnamed but US is obvious here) does this kind of extra-judicial shit around WADA they will be barred from participating and barred from collecting or winning any medals that year. That they could do even last moment but again they'd likely never challenge the US that way.