Today the Post is reporting some big, if symbolic news — Virginia Governor Tim Kaine (D) decided yesterday to impose a moratorium on executions until the U.S. Supreme Court can issue a ruling on a case challenging the constitutionality of lethal injections. Kaine’s announcement directly stayed two upcoming executions. Predictably, Republicans in Virginia have criticized Kaine’s move as a step towards a permanent moratorium, something that would be unthinkable in the a state that has…