The First Department, in a full-fledged opinion by Justice Acosta, determined that the curtailment of cross-examination of a cooperating witness deprived defendant of his right to confront the witnesses against him. Four were charged in a robbery. One of the four, referred to as “M,” entered a cooperation agreement and testified against the defendant. Defense counsel was prohibited from asking M a line of questions intended to reveal M’s motivation and bias:
Here, defendant sought … [to question] M. in an attempt to cast doubt on his credibility by revealing his bias and motive to fabricate testimony. Defense counsel’s theory was that M. had implicated defendant in the prior uncharged robberies in order to bolster the value of his cooperation agreement with the People. This was unquestionably an appropriate trial strategy, since “exposure of a witness’ motivation in testifying is a proper and important function of the constitutionally protected right of cross-examination” … . That M. intended to invoke his Fifth Amendment privilege and refuse to answer the questions does not abrogate defendant’s Sixth Amendment right of confrontation. As an accomplice witness, M.’s credibility, bias, and motive to fabricate were not collateral issues … . Therefore, defense counsel should have been permitted to question him on the prior crimes. If he subsequently invoked his Fifth Amendment privilege, the trial court should have gone as far as striking all or some of his direct testimony … . At a minimum, the court should have pursued the “least drastic relief” (typically reserved for “collateral matters or cumulative testimony concerning credibility”) by instructing the jury that it could consider M.’s invocation of the Fifth Amendment in determining his credibility … . People v McLeod, 2014 NY Slip Op 05926, 1st Dept 8-21-14