I am not sure if "cause-effect relationship" fits in this context. I have looked for better alternatives but I couldn't find one that fits here:
So far, this chapter has provided an analysis of the dynamics of rape politics as far as the cause-effect relationship between the enactment of rape policies and the degree of their enforcement is concerned.
Basically, what I want to say is that the importance of enacting a policy/law is determined by the degree of its enforcement—i.e., what is the point of enacting a law if it is not being abided by.