Cartera v. Virginia

in custody awaiting trial on state and federal charges and awaiting revocation of parole arising out of earlier state conviction | A trial court need not instruct on a defendant's theory of defense where there is no support therefor in the evidence. | “neither a pretrial detainee nor a parole violator has a sufficient interest in the rehabilitation programs of his confining institution to justify invocation of the Act” | A trial court need not instruct on a defendant’s theory of defense where there is no support therefor in the evidence. | notation on prisoner’s record reading “Hold for U.S. Marshalls” insufficient for detainer because recorded by official from sending state and not at direction of officials from receiving entity | Arbitrary application of Illinois waiver rule would justify federal habeas relief | defendant's presence in court presumed though not explicit in record