Lethal Injections from Both Sides Now

My brother sent me this, from James Taranto, WSJ OpinionJournal.  I liked the irony.

Death With Dignity
The New York Times reports on an effort in Washington state to legalize physician-assisted suicide via ballot measure:

The [proposed] law would let doctors prescribe lethal doses of narcotics to terminally ill patients who ask to end their own lives. It would be modeled closely on a statute in Oregon, the only state where the movement has been successful.

This may be a solution to another problem, on which the Times reported in October:

Moments before a Mississippi prisoner was scheduled to die by lethal injection, the Supreme Court granted him a stay of execution on Tuesday evening and thus gave a nearly indisputable indication that a majority intends to block all executions until the court decides a lethal injection case from Kentucky next spring. . . .

While there is no schedule for that review, it will almost surely not take place until the court decides the Kentucky case, Baze v. Rees, which will be argued in January. The issue in that case is not the constitutionality of lethal injection as such, but rather a more procedural question: how judges should evaluate claims that the particular combination of drugs used to bring about death causes suffering that amounts to cruel and unusual punishment, in violation of the Eighth Amendment.

Why not just execute murderers using the Oregon assisted-suicide drug combo, which has been established to be compassionate?