Not now, because he's painted himself into a dark corner.
If anything, Rush would want tougher law enforcement to stop the drug pushers and to make it less likely that these drugs could end up on the street.
Don't count in it. He may have been supplying others (or conspiring to do so).
Rush is an example of why drugs are restricted and made illegal.
And why is that? So good people like Rush won't ruin their lives taking them? How have the drug laws helped him? Did they make it easier for him to publicly acknowledge and overcome his problem? Did drug laws make it easier for him to seek out medical advice about the adverse side effects (eg. hearing loss) from taking large doses of certain painkillers? Did drug laws prevent him from getting harmed by mislabeled street drugs? Did the drug laws help him avoid wasting massive amounts of money to feed his habit?
All the drug laws do is enrich drug warriors, violent drug dealers, and sleazy defense attorneys.