By Jacob Sullum

Matt Labash has an amusing, informative, and frequently astute report on Michigan’s medical marijuana industry in the latest issue of The Weekly Standard. As in California, he finds, it’s not hard to qualify as a patient who is permitted to use cannabis under state law, and many people who do so have common complaints (such as back pain and migraine headaches) that are difficult to verify and may simply be a cover for recreational use. Likewise, the people who go into the business of supplying patients with marijuana include budding entrepreneurs and black-market dealers going semi-legit as well as sincere Good Samaritans who are keen to help people suffering from debilitating conditions such as AIDS wasting syndrome and the side effects of cancer chemotherapy. This being The Weekly Standard, Labash’s emphasis is on the shadier patients and suppliers, and the title of his piece is “Going to Pot: The Medical Marijuana Charade.”

But which charade is Labash talking about? It’s not the claim that marijuana is a useful medicine.

By Jacob Sullum

Opponents of Proposition 19, California’s marijuana legalization initiative, are falsely claiming it would allow people to drive while stoned. In a June Sacramento Bee op-ed piece, Bishop Ron Allen of the Greater Solomon Temple Community Church warned:

If this proposed initiative passes, California drivers will be able to operate a car while under the influence of marijuana.

The initiative states smoking marijuana while driving is impermissible, but it would be perfectly legal to smoke or ingest marijuana immediately prior to driving.

And because marijuana stays in the body so long, police officers will have virtually no way to prove if someone just ingested marijuana 10 minutes ago or 10 hours ago. Unlike with alcohol, there is no current test to show the level of marijuana intoxication. All authorities can currently do is test for the presence of marijuana. If this initiative passes, it is perfectly fine to have marijuana in your system at any time—even while driving a school bus, taxi or light-rail train.

By Bill Piper, Special to CNN

Editor’s note: Bill Piper is the director of national affairs for the Drug Policy Alliance.

(CNN) — It’s as predictable as the sun rising and setting. Even though police made more than 850,000 marijuana arrests last year, a recent government report shows youth marijuana use increased by about 9 percent.

Supporters of the failed war on drugs will no doubt argue this increase means policymakers should spend more taxpayer money next year arresting and incarcerating a greater number of Americans. In other words, their solution to failure is to do more of the same. Fortunately, the “reform nothing” club is getting mighty lonely these days — 76 percent of Americans recognize the drug war has failed; millions are demanding change.

In the almost 40 years since President Nixon declared a war on drugs, tens of millions of Americans have been arrested and hundreds of billions of dollars have been spent. Yet drugs are just as available now as they were then.