Did the Ninth Circuit err when Alex Marquez made a substantial showing of the denial of a constitutional right as to an inadequate Miranda warning leading to an involuntary confession, and thus not an improper waiver of his rights under the Fifth Amendment?

QUESTIONS PRESENTED 1. Did the Ninth Circuit err when Alex Marquez made a substantial showing of the denial of a constitutional right as to an inadequate Miranda warning leading to an involuntary confession, and thus not an improper waiver of his rights under the Fifth Amendment? 2. Did the Ninth Circuit err when Alex Marquez made a substantial showing of the denial of a constitutional right as to the failure by counsel to move to suppress his statements, and failure by counsel to investigate the circumstances by which the statements were made? i