resident Joe Biden's take on American sprinter Sha'Carri Richardson's one-month suspension for marijuana use was similar to hers and correct as far as it went. "Rules are rules," he said on Saturday, and "everybody knows what the rules are going in." Biden added that "whether that should remain the rule is a different issue." But as the collapse of pot prohibition continues apace in the United States, that issue is unavoidable. Now that 44% of Americans live in states that treat marijuana like alcohol, the lingering distinction between these two intoxicants makes less sense than ever before. Richardson, who tested...