Jose Rosario Garibay, Jr. appeals his convictions by a jury for importing marijuana in violation of 21 U.S.C. §§ 952 and 960 and for possession of marijuana with intent to distribute in violation of 21 U.S.C. § 841(a)(1). Garibay asserts that in denying his motion to suppress the district court erred (1) in finding that he had waived his Miranda rights before making inculpatory statements to United States Customs Agents; and (2) in denying his request for a downward departure for acceptance of responsibility.
In reviewing the totality of circumstances in which Garibay was interrogated, it is clear that he was not aware of the nature of the constitutional rights he was waiving, and that the district court clearly erred in finding that he knowingly and intelligently waived his Miranda rights. Accordingly, we hold that the district court erred when it failed to suppress Garibay’s inculpatory statements *536 and allowed them to go to the jury. We also hold that absent Garibay’s incriminating statements obtained in violation of his Miranda rights, the evidence before the jury was insufficient to support his convictions. Therefore, we reverse and remand for proceedings consistent with this opinion. 1
I
On December 15, 1995, Jose Rosario Gari-bay, Jr. attempted to drive into the United States across the U.S.-Mexico border at the Calexico Port-of-Entry. A United States Customs Inspector asked Garibay, in Spanish, to open the trunk of the vehicle. Detecting a silicone odor emanating from the trunk, the Inspector directed Garibay to the Secondary Inspection Lot. A closer inspection of the vehicle revealed a depth-discrepancy in the trunk. The trunk was drilled. The drill bit came out with a green leafy substance that field-tested positive for marijuana. Fifty-five packages of marijuana, weighing approximately 138.65 pounds were removed from beneath the trunk floor. Garibay was arrested and placed in a holding cell.
About an hour later, .United States Customs Agents Joseph William Burke and Jennifer Holden questioned Garibay in English. Agent Burke asked Garibay in English if he understood English, to which Garibay responded “yes.” Agent Burke then orally read in English Garibay’s constitutional rights, pursuant to
Miranda v. Arizona,
II
A. Waiver of Miranda Rights
1. Standard of Review
We review for clear error a district court’s finding that a defendant knowingly and intelligently waived his
Miranda
rights.
See United States v. Cazares,
2. Requirements of a Valid Waiver
For inculpatory statements made by a defendant during custodial interrogation to be admissible in evidence, the defendant’s “waiver of Miranda rights must be voluntary, knowing, and intelligent.”
United States v. Binder,
There is a presumption against waiver.
See id.
at 752. (citing
North Carolina v. Butler,
3. Analysis
Garibay challenges the finding that he validly waived his
Miranda
rights because he was not aware of the nature of the constitutional rights he was abandoning. Specifically, Garibay contends that he did not understand Agent Burke’s recitation of his rights in English because his primary language is Spanish and he has a low verbal IQ. Upon review of the record, we conclude that the prosecution did not meet its burden of proving that Garibay knowingly and intelligently waived his
Miranda
rights.
3
See Connelly,
In determining whether a defendant knowingly and intelligently waived his
Miranda
rights, we consider, as one factor, any language difficulties encountered by the defendant during custodial interrogation.
See United States v. Heredia-Fernandez,
First, contrary to the district court’s conclusion, Agent Burke did not offer Garibay the option of conducting the interrogation in Spanish, nor did Garibay decline such an offer. 4 Rather, Agent Burke questioned Garibay in English and assumed that Gari-bay was sufficiently proficient in English to understand and waive his Miranda rights without the assistance of a Spanish-speaking officer. 5 Agent Burke also admitted that he had to rephrase questions when Garibay did not seem to comprehend what was said to him. Although Spanish-speaking agents were available at the time of Garibay’s arrest and custodial interrogation, Burke did not enlist those agents t'o assist him in questioning Garibay.
Second, the record clearly indicates that 'Garibay’s primary language is Spanish and he understands only a few things in English. Garibay attended a U.S. high school where he received English instruction and received D+ grades in eleventh and twelfth grade English. These grades do not support a finding that he is sufficiently proficient in English to have waived his Miranda rights. Garibay did not graduate from high school. According to the presentence report, Garibay received the passing grades in English because those classes were taught using Spanish. Moreover, a probation officer reported that several independent sources in the community told him that “they did not believe he *538 [Garibay] could speak English except for a few words.” In addition, with the exception of Agent Burke, every witness at the suppression hearing testified that at Garibay’s request they would always communicate with him in Spanish. These witnesses include Garibay’s former high school counselor, Gari-bay’s former football coach, the clinical psychologist who examined Garibay, and the probation officer who prepared Garibay’s pre-sentence report.
Agent Burke, however, testified that Gari-bay indicated that he understood English. But Garibay’s former high school football coach testified that when under stress and interacting with persons of authority, Gari-bay often claimed to understand English and gave the appearance of comprehending English, when in fact he did not understand what was being said to him. A fair reading of the record does not support a finding that Garibay' understood his constitutional rights to remain silent and to have the assistance of counsel. Nor does the record support a finding that Garibay understood that he had the option to knowingly and intelligently waive those rights.
A defendant’s mental capacity directly bears upon the question whether he understood the meaning of his
Miranda
rights and the significance of waiving his constitutional rights.
See Derrick v. Peterson,
In applying the “totality of circumstances” test, we further examine whether other circumstances surrounding Garibay’s interrogation indicate that he knowingly and intelligently waived his constitutional rights, despite his English-language difficulties, borderline retarded IQ, and poor verbal comprehension skills.
See Derrick,
Here, none of these considerations are present. Garibay was not given a written waiver to sign in either English or Spanish nor was he advised of his rights in Spanish. Garibay’s rights were recited to him only in English. Although translators were available at the time of Garibay’s arrest, they were not brought in to help question him. 8 *539 The prosecution offered no evidence that Agent Burke individually explained each constitutional right to Garibay or repeated the explanation.
Moreover, Garibay had no previous experience with the criminal process.
9
Thus, Gari-bay’s personal life experiences do not indicate that he was familiar with his
Miranda
rights and his option to waive those rights.
See e.g., Cooper v. Griffin,
The prosecution, however, contends that Garibay indicated to Agent Burke that he understood his rights. Agent Burke, however, also admitted to rephrasing questions when Garibay did not appear to understand him. Also, the testimony of Garibay’s football coach clearly shows that Garibay, in the presence of authoritative figures, would indicate he understood what was being said to him in English when he did not.
Thus, the facts surrounding Garibay’s interrogation clearly indicate that he did not understand the nature of the rights he was waiving. Moreover, the customs agents took no steps to ensure that Garibay’s waiver was knowing and intelligent. 10 Therefore, we conclude that the district court clearly erred in finding that despite Garibay’s low IQ and poor English-verbal comprehension, he nonetheless functioned at a level sufficient to have understood and waived the constitutional rights orally read to him in English by Agent Burke. Thus, in the circumstances of this case, the district court erred in not suppressing Garibay’s inculpatory statements.
B. Sufficiency of the Evidence
On direct review, the government’s commission of a constitutional error requires reversal of a conviction unless the government proves “beyond a reasonable doubt that the error complained of did not contribute to the verdict obtained.”
Chapman v. California,
The government does not argue that Garibay’s inculpatory statements, if inadmissible, were harmless.
See Chapman,
A defendant’s inculpatory statement “is probably the most probative and damaging evidence that can be admitted against him.”
Arizona v. Fulminante,
Ill
The requirement that a defendant “knowingly and intelligently” waive his
Miranda
rights “implies a rational choice based upon some appreciation of the consequences of the decision.” Cooper,
We are troubled by the circumstances surrounding Garibay’s alleged waiver. It is hard for us to discern any justification for the agents’ failure to ask Garibay whether he preferred Spanish or English and their failure to seek the assistance of bilingual agents in questioning Garibay. The agents’ oversight is-particularly glaring given that Gari-bay’s primary language is Spanish, that Gari-bay was arrested at the U.S.-Mexico border, that Agent Burke had to rephrase several questions in English in an attempt to communicate with Garibay, and that bilingual agents were readily available. Although we have held that an officer need not use a printed waiver form to solicit a valid waiver of
Miranda
rights,
Terrovona v. Kincheloe,
REVERSED AND REMANDED.
Notes
. In light of our ruling on the Miranda issue, there is no need to reach the question whether the district court erred in failing to adjust Gari-bay’s sentence downward for acceptance of responsibility.
. Initially, Garibay said he had bought the car in Mexico from a man he did not know. Subsequently, he admitted that a man he did not know gave him $100 cash to drive the vehicle across the U.S.-Mexico border and leave it at a Jack-in-the-Box restaurant in Calexico, California. The government contends that Garibay was arrested with $106 dollars in his pocket. The police report, however, reports Garibay as having only $20 dollars on his person at the time of his arrest.
. In denying Garibay’s motion to suppress, the district court concluded that Garibay failed to show "that he is unable as a matter of law to knowingly and intelligently waive his rights" (emphasis added). This statement implies that the district court incorrectly placed the burden of showing an invalid waiver on Garibay.
. The district court erroneously found that the officers who interrogated Garibay “were credible when they offered him the chance [to conduct the interrogation] in Spanish ... and he said, no, in English.” When asked if he ever offered Gari-bay the option of using Spanish, Agent Burke did not say "yes” but rather stated "I-basically, when asked him [in English] if he understood English and he stated yes, from that point on, we went ahead and conducted it in English.”
.At the suppression hearing, Dr. Beatrice Heller testified that Garibay told her that, after he was arrested, a female agent "talked to him in Spanish and asked him if he preferred English or Spanish, Garibay said Spanish.” According to Dr. Heller, Garibay also told her that during the interrogation "whenever he tried to elaborate on his answers, using a lot of Spanish he was told by [Agent Burke] to just say yes or no.”
. The record is clear that on a scale of one to ten, Garibay’s English verbal comprehension was below four. Dr. Heller, a clinical psychologist, was the sole expert to testify at the evidentiary hearing on the issue of Garibay’s mental capacity. Dr. Heller is in private practice. She has been a consultant to the San Diego Juvenile Probation Department and to the San Diego Schools. She has previously testified as a court-appointed expert. Garibay’s Spanish verbal comprehension was slightly higher, between four and six.
. Dr. Harry Isner, a psychological coordinator at San Diego Regional Center for the Developmentally Disabled who helped prepare the pre-sen-tence report, corroborated Dr. Heller's conclusion. According to Dr. Isner, given Garibay’s low IQ, Garibay would need a visual demonstration of his rights, personal experience, and repeated concrete instructions, to understand and intelligently waive his Miranda rights.
.In Bernard S., an Apache-speaking defendant had the informal assistance of his mother to help explain the questions posed to him in English. The reliability of translations made by official and lay-interpreters varies greatly. Here, Gari-bay had neither type of assistance.
.
Cf. Glover,
. This entire discussion could probably have been avoided had the customs agents obtained a written Miranda waiver. But we were told by the government at oral argument that the government’s policy at the border was not to use written Miranda waivers in either Spanish or English.
