Plant Prejudice vs. the Constitution

At Lynch's trial the DEA denied giving him any sort of green light, or even a yellow one. But the response he says he got from the agency is the response he should have gotten, because under the U.S. Constitution the medical use of marijuana is a local matter.

At one time John McCain seemed to acknowledge as much. In April 2007 he said, "I will let states decide that issue." But he quickly abandoned that position, and this year he said he'd continue the DEA's medical marijuana raids, declaring, "It is a national issue and not a [state] issue." By contrast, McCain's Democratic opponent, Barack Obama, has promised to stop the raids.

McCain's medical marijuana position contradicts his professed allegiance to federalism. "The federal government was intended to have limited scope," he says on his website, vowing to appoint judges who "respect the proper role of local and state governments."

That commitment is inconsistent with reading Congress's power to regulate interstate commerce broadly enough to cover homegrown medical marijuana, as the Supreme Court did in 2005. "If Congress can regulate this under the Commerce Clause," Justice Clarence Thomas noted in his dissent, "it can regulate virtually anything -- and the federal government is no longer one of limited and enumerated powers."

By supporting the Bush administration's medical marijuana policy, McCain is renouncing such concerns. Worse, his promise to flout the Constitution probably will enhance his appeal among conservatives.