drug addiction

President Trump has convened a panel to address America's opioid epidemic. Its first mission should be to find convincing data to identify the actual cause(s) of the problem. That will be much harder than it sounds, since ideologues are always in plentiful supply.

Indeed, many influential people already seem to have a strong opinion about who is to blame. Claire McCaskill, a Senator from Missouri, points her finger at pharmaceutical companies. She is launching an investigation, but there is little need for one, given that she has already told us what its conclusions are ahead of time: