Major pharmaceuticals refuse to sell to governments known for employing them in executions. Which results in the states with lethal injection having to employ questionable if not shoddy third-party pharmacies to compound the required drugs. Plus physicians refusing to break the Hippocratic Oath also means that doofs with next to no medical training are employed to administer the drugs, leading to frequent instances of slow, agonizing deaths for the condemned. Not that some people would find that disturbing unfortunately.