Whether a district court commits plain error and violates a defendant's Sixth Amendment right to a unanimous jury verdict when it fails to give a specific unanimity instruction in a multi-act VICAR conspiracy prosecution

Whether a district court commits plain error and violates a defendant’s Sixth Amendment right to a unanimous jury verdict when it fails to give a specific unanimity instruction in a multi -act VICAR conspiracy prosecution, where the Government presents evidence of multiple distinct violent conspiracies but the jury is not required to agree on which particular agreement the defendant joined.