Harry Blackmun,
McKoy v. North Carolina — Concurring Opinion
“ To say that the burden of proof may be placed upon the defendant says nothing at all about the situation in which some jurors, but not others, believe that the burden has been satisfied. The dissent's analogy presumes that once the elements of an offense have been proved, the jury's failure to agree as to an affirmative defense results in a conviction (just as a North Carolina jury's failure to agree as to the presence of a given mitigating factor creates a "finding" that the factor is not present) ”
