The European Commission has proposed to make it easier to ban “legal highs” and for countries to jail people who ignore the bans. Legal highs are chemicals which replicate the effects of illicit drugs such as cocaine, ecstasy or marijuana. … So far, EU countries have banned just nine substances on the basis of European Monitoring Center for Drugs and Drug Addiction (EMCDDA) recommendations. One reason for the low number is the long time it takes—around two years—for the EU process to work. But under Tuesday’s proposals, the ECMDDA and the EU’s joint police body, Europol, in the Hague, can...