California, United States of America
The following excerpt is from People v. P.M. (In re P.M.), A153433 (Cal. App. 2019):
To establish a claim of ineffective assistance of counsel, "the defendant must first show counsel's performance was deficient, in that it fell below an objective standard of reasonableness under prevailing professional norms. Second, the defendant must show resulting prejudice. . . . When examining an ineffective assistance claim, a reviewing court defers to counsel's reasonable tactical decisions, and there is a presumption counsel acted within the wide range of professional assistance." (People v. Mai (2013) 57 Cal.4th 986, 1009.)
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