The drawbacks of legalization do not imply that our current version of prohibition is the optimal drug strategy; it may well be possible to implement prohibition in less harmful ways.
We are open to changing the way prohibition is implemented
 it may well be possible to implement prohibition in less harmful ways.
( z1 open :ARG1 ( z2 we ) :ARG2 ( z3 change :ARG0 z2 :ARG1 ( z4 way :manner-of ( z5 implement :ARG1 ( z6 prohibit ) ) ) ) )