Lastly, the author uses the precedent of marijuana legalization in other countries as evidence that legalization does not solve any social problems, but instead creates them.
Countries were cannabis is legal  have additional social issues expounds author
( z1 expound :ARG0 ( z2 person :ARG0-of ( z3 author ) ) :ARG1 ( z4 country :location-of ( z5 legal :ARG1 ( z6 cannabis ) ) :ARG0-of ( z7 have :ARG1 ( z8 issue :ARG0 z6 :mod ( z9 social ) :mod ( z10 additional ) ) ) ) )