partiality of the district court was so suspect as to require a new trial. Id. “Plain error occurs when there is (1) error, (2) that is plain, which (3) affects substantial rights, and which (4) seriously affects the fairness, integrity, or public reputation of judicial proceedings.” United States v. Gonzalez-Huerta, 403 F.3d 727, 732 (10th Cir.2005) (en banc) (quotation omitted).
“The Due Process Clause entitles a person to an impartial and disinterested tribunal in both civil and criminal cases.”
Marshall v. Jerrico, Inc., 446 U.S. 238, 242, 100 S.Ct. 1610, 64 L.Ed.2d 182 (1980). To demonstrate a violation of due process because of judicial bias, a claimant must show either actual bias or an appearance of bias.
Phelps v. Hamilton, 122 F.3d 1309, 1323 (10th Cir.1997). A judge must recuse himself “if sufficient factual grounds exist to cause a reasonable, objective person, knowing all the relevant facts, to question the judge’s impartiality.”
United States v. Pearson, 203 F.3d 1243, 1277 (10th Cir.2000). A judge’s actual state of mind or prejudice is not at issue.
United States v. Cooley, 1 F.3d 985, 993 (10th Cir.1993). “The standard is purely objective,” and “[t]he inquiry is limited to outward manifestations and reasonable inferences drawn therefrom.”
Id.Ordinarily, when a judge’s words or actions are motivated by events originating within the context of judicial proceedings, they are insulated from charges of bias. Liteky v. United States, 510 U.S. 540, 554-56, 114 S.Ct. 1147, 127 L.Ed.2d 474 (1994). Thus, “adverse rulings cannot in themselves form the appropriate grounds for disqualification.” Green v. Branson, 108 F.3d 1296, 1305 (10th Cir.1997) (quotation omitted). Likewise, “[a] judge’s ordinary efforts at courtroom administration,” even if “stern and short-tempered,” are “immune” from charges of bias and partiality. Liteky, 510 U.S. at 556, 114 S.Ct. 1147. Although a judge’s remarks during the course of a trial may be “critical,” “disapproving,” or “hostile” to a party, usually they will not support a partiality charge. Id. at 555, 114 S.Ct. 1147.
Recusal may be appropriate, however, when a judge’s decisions, opinions, or remarks stem from an extrajudicial source—a source outside judicial proceedings. Id. at 554-55, 114 S.Ct. 1147. Recusal is necessary when a judge’s actions or comments “reveal such a high degree of favoritism or antagonism as to make fair judgment impossible.” Id. at 555, 114 S.Ct. 1147. Courts have found an impermissible level of bias when a judge’s remarks or actions reveal he has prejudged the guilt of a defendant. For example, the Court of Appeals for the Third Circuit concluded a judge should have recused himself when his stated object in a case was “to get back to the public that which was taken from it as a result of the fraudulent activities of this defendant and others.” In re Antar, 71 F.3d 97, 100, 102 (3d Cir.1995).
Here, Nickl bases his bias claim in part on the court’s refusal to grant defense counsel’s requests for a continuance to brief Blakely issues and for an additional jury instruction regarding its reprimand and ejection of Dr. Brooks. These are merely adverse rulings, and do not in themselves support a bias charge. Green, 108 F.3d at 1305. They are grounds for appeal, not recusal. Liteky, 510 U.S. at 555, 114 S.Ct. 1147. Likewise, the court’s reprimand and ejection of Dr. Brooks from the courtroom, its interruption of witness testimony, and its questioning of witnesses