Did the Ninth Circuit fail to protect petitioner's fundamental due process right to present his complete defense?

QUESTIONS PRESENTED Did the Ninth Circuit fail to protect petitioner’s fundamental due process right to present his complete defense when it approved the district court’s exclusion of relevant, highly probative and admissible expert testimony that was critical to petitioner’s sole defense, diminished capacity? Did the Ninth Circuit disregard this Court’s clear precedent and violate petitioner’s Due Process rights when it affirmed the imposition of a severe life sentence that was based in part on petitioner’s exercise of his constitutional right to trial and to appeal his conviction?