Can a defendant's federal due process rights be violated if a prosecutor makes improper remarks at trial?

Is a defendant's claim that the trial court's failure to provide him with the means and subpoena witnesses to defend at trial a violation of his Sixth Amendment right to represent himself at trial reversible? (California, United States of America)

Can a defendant recast his claim for a federal due process violation as a federal violation of his right to associate with others? (California, United States of America)

How have courts dealt with error at trial where a prosecutor made an error in making an improper remark to a defendant? (California, United States of America)

If defendant has no right to present the evidence at trial, has he not established a violation of his right to a fair trial? (California, United States of America)

When a defendant makes a mid-trial motion to revoke his self represented status and have standby counsel appointed for the remainder of the trial, does the trial court have a duty to manage the trial? (California, United States of America)

Is there any case law in which a federal or state prosecutor has been found to have violated a defendant's right to due process? (California, United States of America)

What is the test for a defendant's claim that the exclusion of evidence in the trial of a defendant in a sexual assault case violated his federal constitutional right to present a defense? (California, United States of America)

Does a denial of a motion to set a date for trial violate a defendant's right to a jury trial and due process? (California, United States of America)

What is the test for determining whether a trial court's decision to restrain a defendant violates federal due process rights? (California, United States of America)

Is a defendant's right to due process violated when evidence of a witness's identification of that defendant is admitted? (California, United States of America)