Maybe Trump will build a wall around the Post Office.

We're not going to be able to stop the supply, so we better get busy on the demand side.  Education and treatment.  Provide opioids for free in a clinical setting where addicts can go for clean, metered doses.  They don't overdose (which costs us with first responders) and they don't have to break into my house and car to feed their habit.  And they starve out the drug dealers.

You might not like that solution, but do you have something better (that's constitutional)?