[derefr]

Is there even a legal structure allowing a government to pass a tax with a particular outflow, in a way that prevents said government from later deciding to redirect the tax's revenue to a different outflow? Like how a trust works for private citizens, but at an organizational level?

[UnpossibleJim]

You can earmark tax dollars for particular spending, but Seattle has a habit of only doing said earmarks for 2 to 3 years before going into the general fund. I'm not sure if you can make those earmarks indefinite, to be honest.