Opinions such as Giles v. California (2008) discuss the matter (although the statements in Giles were not a dying declaration), but Justice Ginsburg notes in her dissent to Michigan v. Bryant (2011) that the court has not addressed whether the dying declaration exception is valid after the confrontation clause cases.
Certain opinions, like Giles v. California (2008), touch upon this topic, although the statements in Giles were not a dying declaration statement. Conversely, Justice Ginsburg points out in her dissent to Michigan v. Bryant (2011) that the court has not investigated whether the dying declaration exception remains valid after the confrontation clause cases.