The distinction between letting people die and killing them by lethal injection is now an integral part of the medico-legal landscape. This is the compromise we have arrived at in the struggle to take a humane approach toward seriously ill patients while still preserving as many traditional restraints against killing as we possibly can. This may be neither the logician's or the philosopher's way to resolve the controversy, but it may nevertheless be a defensible pragmatic way to do so.
Kamisar, Yale. "Should Active Euthanasia Be Legalized? No: Preserve Traditional Restraints." A. B. A. J. 79, no. 4 (1993): 43.