Pioneer Finishing Corp. v. National Labor Relations Board

right to pro se defense is not absolute once trial begins; trial court has discretion to balance alleged prejudice to defendant against potential disruption and delay | capital sentencing scheme which requires the accused to prove, by a preponderance of the evidence, any mitigating circumstances that might convince a jury that the sentence should nevertheless be set at life imprisonment, is not offensive to due process | capital sentencing scheme which requires the accused to prove, by a preponderance of the evidence, any mitigating circumstances that might convince a jury that the sentence should nevertheless be set at life imprisonment, is not offensive to due process | capital sentencing scheme which requires the accused to prove, by a preponderance of the evidence, any mitigating circumstances that might convince a jury that the sentence should nevertheless be set at life imprisonment, is not offensive to due process