In what circumstances will a defendant be excused from making a further offer of proof on a quarrel between a defendant and a police officer?

Likewise, in Greatreaks v. United States, 211 F.2d 674, 676 (9th Cir.1954), we excused the defendant's failure to make a further offer of proof on a quarrel between the defendant and a police officer because the trial court had announced in advance that it would not receive evidence concerning that quarrel. The defendant sought to introduce the quarrel to discredit the officer's testimony alleging that the defendant had bribed the officer. We added that after such an exclusionary ruling, "the persistence of counsel in making or repeating such offers may be treated as improper attempts to get before the jury the

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