Could the United States project power against Japan and China immediately after destroying Kido Butai?
Short answerNot comprehensively, but surviving American carriers would have considerable freedom if Japan had lost its principal fleet striking force.
NotesThe United States could not establish comprehensive control over Japan and China immediately after an ambush. American carriers operating near Japan could still conduct many damaging operations if the Imperial Japanese Navy no longer had an effective fleet. Removing Kido Butai would change the maritime balance before the United States completed its wartime buildup. The counterfactual grants operational freedom rather than instant regional dominance.