475 U.S. 673 475 U.S. 673 106 S.Ct. 1431 89 L.Ed.2d 674 DELAWARE, Petitioner,v.Robert E. VAN ARSDALL. No. 84-1279. Argued Jan. 22, 1986. Decided April 7, 1986. Syllabus During respondent’s murder trial, the Delaware trial court refused to allow defense counsel to cross-examine a prosecution witness about an agreement that he had made to speak […]