What is the standard for finding a federal prosecutor guilty of misconduct in a civil case?

The standard under which prosecutorial misconduct is evaluated is well settled. "A prosecutor's conduct violates the Fourteenth Amendment to the federal Constitution when it infects the trial with such unfairness as to make the conviction a denial of due process. Conduct by a prosecutor that does not render a criminal trial fundamentally unfair is prosecutorial misconduct under [California] law only if it involves the use of deceptive or reprehensible methods to attempt to persuade either the trial court or the jury. . . . [W]hen the claim focuses upon comments made by the prosecutor before the jury, the question is whether there is a reasonable likelihood that the jury construed or applied any of the complained-of remarks in an objectionable fashion." (People v. Morales (2001) 25 Cal.4th 34, 44; People v. Johnson (2016) 62 Cal.4th 600, 652.)