The Newlands Resolution
It requires that USA has sphered Hawaii and have invented Nationalism and Imperialism. It is not possible to take if Hawaii is controlled by a player nation, so one does not have to fear it, when playing as Hawaii. (except in Vanilla)
The decision annexes Hawaii and gives 2 prestige.
Initially no one but USA has an interest in sphering Hawaii, so USA is often let in peace to take the decision.