And then there is the matter of insurance coverage. We can't imagine an insurance company paying for a week or month of treatment for a cancer patient, but then withholding any further coverage. As part of an effective war on addiction, insurance companies must be required to cover comprehensive addiction treatments, which are the most effective we have. Paying for the best treatment money can buy is expensive, but not doing so is more expensive. RAND Corporation's drug-policy center found that for every dollar spent on treatment for addiction, taxpayers save more than seven in other services, largely through reduced crime and medical fees and increased productivity. A visit to the emergency room, for instance, costs as much as a month in rehab.