The major problem is federal law, so change itHaving abandoned much of the Reagan way — the sunny disposition, free trade, the unshakeable commitment to America’s global leadership — the Trump administration has now embraced the worst of the Reagan legacy: deficits, for one thing, and the so-called war on drugs, which Attorney General Jeff Sessions means to fight with atavistic rigor. In the 22 years since the editors of this magazine declared “The War on Drugs Is Lost,” the United States has lurched, spasmodically, toward a new settlement on drugs, especially on marijuana. Republicans, ranging from libertarian-leaning figures such...