Petition of the day

Issue: Whether a federal court that bases its harmless error decision on the “grave doubt” rule of O’Neal v. McAninch can condemn a state court’s harmless-error decision as “so lacking in justification that there was an error well understood and comprehended in existing law beyond any possibility for fairminded disagreement,” Harrington v. Richter, such that 28 U.S.C. 2254(d) will not bar federal habeas relief.