Opinion for the Court filed by Circuit Judge ROGERS.
Appellant Lionel Ortiz appeals his convictions by a jury of several drug distribution offenses on the grounds that in two instances the district court erred by failing to act sua sponte, and in a third instance, abused its discretion. Specifically, Ortiz contends that the district court erred by failing to conduct a colloquy with him to determine whether he had waived his right to testify and plainly erred by failing to inquire whether a potential defense witness could assert a blanket Fifth Amendment privilege. Ortiz also contends that the district court abused its discretion by denying a mistrial when the prosecutor commented in closing argument on Ortiz’ failure to speak at trial. We affirm.
I.
Ortiz was indicted for conspiracy to distribute cocaine base, 1 attempted distribution of cocaine base, 2 unlawful use of a communication facility, 3 possession with intent to distribute cocaine base, 4 and distribution of cocaine base. 5 According to the government’s evidence, Special Agent Robert Valentine of the Drug Enforcement Administration first met Ortiz on April 9,1991. Earlier that day, Valentine had arranged with Florentino Mendez to purchase 125 grams of crack cocaine for $3,200, and they met that evening at a restaurant to consummate the transaction. Mendez introduced Ortiz to Valentine as “Carlos.” Ortiz told Valentine that the drugs would be there in 30 minutes and would cost “33,” which Valentine agreed to pay. When the drugs did not arrive, Ortiz made several telephone calls. When Valentine decided to leave, Ortiz wrote down his pager number for Valentine to contact him for future transactions.
Ortiz paged Valentine the next day, April 10th. Valentine taped this telephone conversation in which he and Ortiz arranged to meet the following day. On April 11th, Ortiz and Valentine went to a restaurant restroom where Ortiz gave Valentine a plastic bag of crack cocaine in exchange for $3,200.
A week later, on April 18th, Valentine arranged with Mendez to buy a quarter kilogram of cocaine base for $6,000. That evening, Valentine and undercover agent Barbara Rist met Mendez and Ortiz at a restaurant. In the restroom, Ortiz gave Valentine a plastic bag of white substance. Upon rejoining Mendez and Rist, Rist gave Ortiz the money. Ortiz counted it, reported that it was “good” and left to pay “the guy”; he returned and Valentine gave him $1,000 that was short. Ortiz left again, and later reported that “everything was fine.”
Thereafter, Valentine and Mendez arranged a fourth meeting. On April 25, Mendez met Valentine at a restaurant, advising that Ortiz “was in the area” with a kilogram of crack that they would sell for $26,000. When Ortiz arrived, after counting the proffered money, he went with Valentine to the restroom. But when Ortiz insisted on getting the money before turning over a bag *1069 containing about one kilogram of crack, they returned to the restaurant and Valentine gave a prearranged signal to other DEA agents to arrest Ortiz and Mendez. A search of Ortiz turned up 125 grams of crack and a pager.
The government also presented testimony from DEA agents who conducted surveillance of the four meetings and identified Ortiz as the person making the drug sales as well as photographs of the scenes and portions of the meetings, a tape recording of Valentine’s April 10th telephone conversation with Ortiz, and the drugs.
Ortiz presented testimony from his priest, his employer, his wife, and family friends to show that he was working, as his April work time cards showed, on the dates of the drug transactions. In addition, he presented two expert witnesses. A foreign language interpreter opined, based on comparing Ortiz’ English proficiency with that of the speaker on the tape recording of the April 10th tape conversation, that “it is probably not Mr. Ortiz who is on [the] tape.” A forensic document examiner opined that Ortiz’ left-handed handwriting samples and the written pager number given to Valentine, which contained evidence of a right-handed writer, were “entirely different.” 6
The jury found Ortiz guilty of the drug counts, but deadlocked on the counts charging unlawful use of a communication facility, which the government then dismissed. The district court sentenced Ortiz to 210 months’ imprisonment and five years’ supervised release. 7
II.
Ortiz contends that the district court erred by failing sua sponte to address him personally about whether he had knowingly and intelligently waived his right to testify. He maintains that he was unaware his counsel had advised the court that Ortiz had made an “informed” decision not to testify, and that had he known of his right to testify he would have testified.
In
Rock v. Arkansas,
A number of circuit courts have concluded that the district court does not have a
sua sponte
duly to conduct a colloquy with the defendant at trial to determine whether the defendant has knowingly and intelligently waived the right to testify.
8
In finding no
*1070
duty, the circuits have tended to focus, at least in part, on avoiding interference with the client-counsel relationship and defense strategy.
See, e.g., Pennycooke,
Nevertheless, some circuits readily acknowledge that there are circumstances when a colloquy will be important. In
Jordan,
the Fifth Circuit suggested that a colloquy would eliminate the uncertainty left by a silent record when the appellate court (as well as the trial court) is confronted with the defendant’s claim that his right to testify was denied.
We, like our sister circuits and the state courts, have no doubt that a criminal defendant has a fundamental constitutional right to testify that is personal to the defendant and cannot be waived by counsel or the court.
See Boyd,
Even so, a defendant’s conduct will suffice at times to show a waiver of a fundamental and personal right. For example, the district court may properly infer a waiver of the right to represent one’s self when the defendant appears at trial with counsel.
See United States v. Jones,
We have no occasion, however, to confront the subtleties that may attend the district court’s responsibility to conduct a colloquy when a defendant does not take the witness stand. Our review is confined to the trial record and we conclude that the court did not have a
sua sponte
duty to inquire directly of Ortiz whether he had waived his right to testify. We thus reject Ortiz’ view that whenever the defendant does not testify there is a
per se
requirement that the district court inquire directly of the defendant whether he knowingly and intelligently waives his right to testify. Absent evidence of something to alert the district court to a problem in the client-counsel relationship, such as conduct falling below the Sixth Amendment standard of
Strickland v. Washington,
However, we also reject the demand rule, requiring that the defendant directly express to the court during the trial the desire to testify, in recognition of the impracticability of placing a burden on the defendant to assert a right of which he might not be aware or to do so in contravention of the court’s instructions that the defendant speak to the court through counsel.
See El-Tabech v. Hopkins,
Early in the defense case, Ortiz’ counsel advised the district court that Ortiz was “going to testify.” Near the end of the defense case, the district court inquired whether counsel had another witness and Ortiz’ counsel stated, “I have one more witness, at least. Potentially two more. Possibly the defendant.” Following a luncheon recess, the court asked counsel whether Ortiz was going to testify. Counsel shook her head “no.” After examination of the final defense witness, the district court called counsel to the bench:
The Court: First of all, I take it that your client has made a decision.
[Defense counsel]: Informed decision.
The Court: Informed decision not to testify.
[Defense counsel]: Based on my advice.
The Court: Based on your advice.
[Defense counsel]: Yes, your honor.
Nothing in the trial record gave the district court any reason to doubt Ortiz’ counsel’s representation. Although the trial record reflects (as a result of the district court’s inquiries of Ortiz’ counsel) an apparent change in Ortiz’ plans to testify, counsel indicated that it was Ortiz who had made the final determination about the change. This is not to suggest that a defendant’s silence is dispositive, or that there is an irrebuttable presumption of waiver from a silent record.
See Jordan,
Further, although the discussion with counsel might have been extended to make the matters just discussed more explicit, the district court could reasonably conclude that Ortiz had acquiesced in his counsel’s advice.
Cf. Jordan,
Finally, the district court had no reason to suspect any conflict between Ortiz and his counsel with respect to counsel's handling of the defense ease.
See Thompson,
For these reasons we conclude that, under the circumstances revealed by the trial record, the district court properly relied on counsel’s assertion that Ortiz had acquiesced in her advice not to testify and made no inquiry of Ortiz himself.
III.
Ortiz also contends that the district court erred by failing to inquire
sua sponte
whether a prospective defense witness could properly assert a blanket Fifth Amendment privilege against self incrimination. Because Ortiz never alerted the district court to his
*1073
concern about the breadth of the witness’ Fifth Amendment claim, we review for plain error.
United States v. Harrison,
This court made clear in
United States v. Thornton,
More particularly, Ortiz’ counsel advised the court in mid-trial that she had “discovered a witness over the weekend who can provide direct exculpatory evidence on behalf of’ Ortiz, but that “the witness has a Fifth Amendment problem.” The district court appointed counsel for the witness. Ortiz’ counsel thereafter informed the court that the witness’ counsel had advised the witness not to testify without immunity. Ortiz’ counsel then sought immunity for the witness from the government. When the prosecutor declined to grant immunity, Ortiz’ counsel asked the court to grant immunity to the witness. The district court also declined, citing
Earl v. United States,
Because Ortiz’ counsel proffered that the witness would testify about knowledge that she obtained while translating telephone conversations involving drug deals for one of the co-defendants, the district court had no basis to conclude that the witness could not assert a blanket privilege.
See Hoffman v. United States,
IV.
Finally, Ortiz contends that the district court abused its discretion by denying his motion for a mistrial after the prosecutor stated in closing argument to the jury that: “Another interesting thing happened with [the defense expert witness who opined that it was probably not Ortiz’s voice on the tape recording]. [The witness’] testimony enabled the defendant not to .have to speak to you.” Relying on
Griffin v. California,
In denying a mistrial, the district court reasoned that the prosecutor did not intend to comment on Ortiz’ failure to testify, but instead had commented on Ortiz’ voice evidence. The court noted, moreover, that it was not even sure that the Fifth Amendment precluded such a statement because the government was entitled to compel Ortiz to give a voice exemplar. Although, as the district court observed, Ortiz could have been compelled to give a voice exemplar,
United States v. Wade,
In any event, Ortiz can show no prejudice from the prosecutor’s statement in closing argument.
See Brecht v. Abramson,
Accordingly, we affirm the judgment of conviction.
Notes
. 21 U.S.C. § 846 (1988).
. Id.
. 21 U.S.C. § 843(b) (1988).
. 21 U.S.C. § 841(a) & (b)(1)(A)(iii) (1988).
. Id.
. In rebuttal the government presented the testimony of two co-defendants, who had entered pleas, that they had delivered drugs to Ortiz, and that one co-defendant had no information that Ortiz was working at the relevant times.
. The district court denied Ortiz’ motion for post-conviction relief pursuant to 28 U.S.C. § 2255 on the grounds of ineffective assistance of counsel. Ortiz did not file a notice of appeal. Fed.R.App.P. 3 & 4;
United States v. Hernandez,
.
United States v. Pennycooke,
.
LaVigne v. State,
. Model Rules of Professional Conduct Rule 1.2(a) & cmts. (1995) (“In a criminal case, the lawyer shall abide, by the client's decision ... whether the client will testify.”); ABA Standards for Criminal Justice 4-5.2(a)(iv) (3d ed. 1993) ("whether to testify in his or her own behalf" is a decision "to be made by the accused after full consultation with counsel”).
