How have appellate courts dealt with a notice of appeal and supplemental brief?

Defendant filed a notice of appeal. We appointed appellate counsel to represent him. Appointed counsel filed a brief in which no issues were raised. (People v. Wende (1979) 25 Cal.3d 436 (Wende).) Defendant filed a supplemental brief¹ with this court, raising a number of issues, such as the sufficiency of the evidence, instructional error based on defendant's mental health, ineffective assistance of counsel, and the prejudicial impact of late discovery.

Defendant has not raised any arguable appellate issues. His claims of error are not supported by any legal analysis. "Where a point is raised in an appellate brief without argument or legal support, 'it is deemed to be without foundation and requires no discussion by the reviewing court.' [Citation.]" (People v. Murray (2008) 167 Cal.App.4th 1133, 1143.) Defendant's failure to provide legal argument or authority forfeits these issues on appeal. (People v. Hovarter (2008) 44 Cal.4th 983, 1029; People v. Meyer (1963) 216 Cal.App.2d 618, 635.)

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