Choices take place within causality. Causal language can and should be applied to choices. If your politics appears to require a spooky metaphysical sort of free will and your ethics fail to align with the real world of cause-and-effect, then they are wrong.
An infinite number of theories of causality can be applied to any situation. This is why much of human thought, and some brands of political theory and law assume the ideal of "free will". To determine the actual "cause" of any event in the way you would like to interpret it, you would have to be omniscient.
