Efren Patino-Prado was convicted by a jury of conspiring to possess with intent to distribute marihuana and cocaine in violation of federal drug laws. On appeal he argues that there was insufficient evidence to sustain his conviction for the cocaine-related conspiracy and that improper jury instructions permitted the jury to convict him without unanimously agreeing as to the precise object of the alleged conspiracy. We find no error and affirm the conviction and sentence.
I. Facts and Procedural Background
A. The Conspiracy
There is evidence in the record to support the following version of events. In the summer of 1997, Patino-Prado approached Rafael Dominguez, Jr., about transporting a load of drugs from Texas to Chicago, Illinois. Unfortunately for Pati-no-Prado, the Federal Bureau of Investigation suspected that Dominguez Jr. was involved in drug trafficking from Mexico to the United States and had already begun an investigation into his activities. This investigation entailed the use of, among other things, court-authorized wiretaps and confidential informants. In early September 1997, the FBI began intercepting phone conversations between Dominguez Jr. and his father, Rafael Dominguez, Sr., regarding a large shipment of drugs from Texas to Chicago.
In mid-September, Patino-Prado, Dominguez Jr., and Dominguez Sr. met in Houston, Texas, to plan the transportation of the drugs. Patino-Prado agreed that one of his associates would drive the drugs from Texas to the outskirts of Chicago. *307 Dominguez Jr. would arrange for a local driver to take the drug-laden tractor-trailer into the city and secure a warehouse where the truck could be unloaded. The drugs would be hidden in a load of imported limes. Both Dominguezes testified that Patino-Prado only discussed a “marihuana shipment” at this meeting; no one mentioned cocaine. The Dominguezes insist that they never agreed to transport cocaine.
After the meeting, Dominguez Jr. directed his aunt and uncle, who, unknown to him, were FBI informants, to make arrangements for a warehouse in Chicago. Dominguez Sr. arranged for a small market in Chicago to place an order for the limes. The use of the market enabled him to obtain a bill of lading that would permit the limes to pass through United States customs. Patino-Prado approved these arrangements and told Dominguez Sr. that he would place just under one ton of marihuana on the truck with the limes. Dominguez Jr. hired Michael Cavazos to meet Patino-Prado’s driver on the outskirts of Chicago and drive the tractor-trailer to the warehouse.
On September 27, the tractor-trailer bearing the limes departed for Chicago from Hidalgo, a south Texas town joined to Mexico by a bridge over the Rio Grande. On September 28, Dominguez Jr. flew to Chicago along with his aunt and uncle. On September 29, Patino-Prado met Dominguez Jr. at a restaurant in Chicago. During this meeting, Patino-Prado stated that he believed he was under surveillance. That belief caused Patino-Prado later in the day to inform Dominguez Jr. that he was leaving Chicago and that a person named “Leonel” would close the transaction in his stead. On September 30, Leonel contacted Dominguez Jr. and arranged a meeting for the next day.
On October 1, Leonel met Dominguez Jr. and took him to the tractor-trailer which was parked at a hotel on the outskirts of Chicago. Leonel gave Dominguez Jr. the keys to the truck and a partial payment for the warehouse. Dominguez Jr.’s driver, Cavazos, then took the truck from the hotel to an industrial park. After Dominguez Jr. inspected the warehouse and found it satisfactory, Cavazos drove the truck into the city. However, Cavazos had a difficult time maneuvering the tractor-trailer into the warehouse. Dominguez Jr. stopped traffic while Cavazos tried to back into the warehouse.
While assisting Cavazos’s efforts to maneuver the tractor-trailer, Dominguez Jr. noticed a white vehicle drive past multiple times. Suspicious that the car was driven by law enforcement officers, Dominguez Jr. fled the scene along with his father and Leonel. Dominguez Jr. called Patino-Pra-do and told him what had happened. Pati-no-Prado advised him to leave the area. Later that day, the FBI searched the tractor-trailer and warehouse and seized 915 kilograms of marihuana and 245 kilograms of cocaine. After verifying that the warehouse had been raided, Dominguez Jr. informed Patino-Prado that the load of drugs had been seized. Patino-Prado requested proof of the seizure.
On October 2, news sources in Chicago carried reports of the warehouse raid and drug seizure. Leonel watched a television report and became concerned because the report noted only that marihuana was seized, making no mention of the cocaine. Leonel called Dominguez Jr. to inquire about the cocaine that had been hidden in the tractor-trailer. Dominguez Jr. told Leonel that he did not know anything about cocaine having been stashed in the truck. According to Dominguez Jr., Leonel responded with some surprise: “Efren [Patino-Prado] never told you?” Domin *308 guez Jr. responded, “He never told me,” and then ended the conversation out of fear that he was under surveillance.
On October 5, Dominguez Jr. met with Patino-Prado in Houston, Texas. Dominguez Jr. provided a newspaper clipping to prove that the drugs were seized and confronted Patino-Prado about the placement of cocaine in the tractor-trailer. According to Dominguez Jr., Patino-Prado apologized for not telling either of the Domin-guezes about the cocaine. Apparently, Dominguez Jr. was not so much concerned about having transported cocaine as he was upset that he had done so unknowingly; he would have demanded a higher fee.
Two days later, Patino-Prado met Dominguez Jr. again and asked if he would be interested in moving some more cocaine. Dominguez Jr. said that he was. Patino-Prado said that he knew where he could get 25 kilograms of cocaine, but he had to check on the price. Dominguez Jr. reiterated that he was interested in transporting the cocaine. The two never met again; Dominguez Jr. never transported a second load of cocaine for Patino-Prado.
B. Indictment and Trial
In May 1998, a federal grand jury indicted Patino-Prado and five other individuals, including both Dominguezes, each on one count of conspiring to possess with intent to distribute marihuana and cocaine in violation of 21 U.S.C. §§ 841(a)(1), (b)(1)(A), & 846. For reasons that are not entirely clear, Patino-Prado was not immediately arrested. In fact, he did not make an initial appearance before the district court until May 2005. The Dominguezes both pled guilty to the conspiracy charge. Pati-no-Prado pled not guilty. During his jury trial, a number of law enforcement agents testified regarding their investigation of Patino-Prado and his co-conspirators. Dominguez Jr. and Dominguez Sr. also testified against him. The jury returned a verdict of guilty. The district court denied Patino-Prado’s motions for a judgment of acquittal made at the close of evidence and again after the verdict.
Patino-Prado was sentenced to 240 months in prison, the maximum sentence for conspiring to possess with intent to distribute an unspecified quantity of cocaine under 21 U.S.C. § 841(b)(1)(C). He was also given a three-year term of supervised release and ordered to pay $5,100 as fine and special assessment. Patino-Pra-do timely appealed his conviction and sentence.
II. Discussion
Patino-Prado’s appellate arguments may be summarized this way: (A) there was insufficient evidence to support a conviction for the cocame-related conspiracy; (B) the jury instructions improperly permitted the jury to convict him without unanimously agreeing whether the object of the conspiracy involved marihuana or cocaine; and (C) alternatively, because the jury was not required to agree unanimously about the object of the conspiracy, his sentence must be reformed to the maximum length permissible for a marihuana-related conspiracy.
We will follow that order in analyzing the issues presented.
A. Sufficiency of the Evidence
Because Patino-Prado raises a challenge to the sufficiency of the evidence after having properly moved for a judgment of acquittal, we consider whether a rational jury could have found the essential elements of the offenses beyond a reasonable doubt.
United States v. Moreno,
Federal law criminalizes possession with intent to distribute a “controlled substance.” 21 U.S.C. § 841(a)(1). The essential elements of a violation of Section 841(a)(1) include: (1) knowledge, (2) possession, and (3) intent to distribute the controlled substance.
United States v. Delgado,
To establish a conspiracy to violate Section 841(a)(1), the government must prove beyond a reasonable doubt: (1) the existence of an agreement between two or more persons to violate narcotics laws, (2) the defendant’s knowledge of the agreement, and (3) his voluntary participation in the conspiracy.
United States v. Valdez,
At trial, Patino-Prado conceded his participation in a conspiracy to possess and distribute marihuana, but argued that he never agreed with anyone to possess cocaine with intent to distribute and had no knowledge that the tractor-trailer contained cocaine. 1 On appeal, he argues that the government adduced no evidence that the object of the conspiratorial agreement was cocaine. The Government counters that there was overwhelming evidence of a cocaine-related conspiracy between Pati-no-Prado and others charged in the indictment.
The parties’ dispute regarding cocaine is irrelevant as to whether there was sufficient evidence to sustain Patino-Pra-do’s conviction for conspiracy under 21 U.S.C. §§ 841(a)(1) and 846. This court has recognized that to obtain a conviction under Section 841(a)(1), “the government is not required to prove that a defendant knew the exact nature of the substance with which he was dealing; it is sufficient that he was aware that he possessed some controlled substance.”
United States v. Gonzalez,
Here, the indictment charged Patino-Prado with conspiring to possess with intent to distribute marihuana and cocaine. Patino-Prado conceded his involvement in a marihuana-related conspiracy at trial and has not sought to undo that concession on appeal. Therefore, the government has proven — in fact, it is undisputed — that Patino-Prado conspired with at least one other person to possess with intent to distribute one of the controlled substances (marihuana) alleged in the indictment. The elements of conspiracy under Section 846 to violate Section 841(a)(1) have been sufficiently proven.
B. Jury Unanimity as to Object of Conspiracy
At trial, Patino-Prado objected to the following instruction:
The government must prove beyond a reasonable doubt that the defendant conspired to possess with intent to distribute some controlled substance, but need not prove that the defendant knew which particular controlled substance was involved.
The district court overruled his objection. This instruction was taken from this court’s pattern criminal jury instructions. Fifth Circuit Pattern Jury Instruction: Criminal § 2.89 (Note). We preview, as an aid to clarity, that there is an important pair of special interrogatories that were given the jurors on the verdict form that did require them to determine whether marihuana, cocaine, or both were the object of the conspiracy. Those interrogatories were to be used only after a finding of guilt of the more general-object conspiracy and are therefore primarily relevant as to the sentencing issue we will discuss below. 2
Patino-Prado argues that this and related jury instructions were flawed because they did not require unanimous agreement as to the precise object of the charged conspiracy. This argument draws directly from the argument on evidentiary sufficiency that we have already discussed, but we review it separately if not without some overlapping analysis. We review Patino-Prado’s challenge to the jury instructions for an abuse of discretion.
United States v. Clayton,
We have already shown that Patino-Prado need not have known that he possessed both controlled substances alleged in the indictment in order to be convicted under Section 841(a). In one precedent,
*311
we approved a supplemental instruction to the effect that the jury “could convict [the defendant] for possession of heroin if it believed beyond a reasonable doubt that he knew there was some controlled substance in the car, whether or not he knew it was actually heroin or some other drug or narcotic .... ”
Gonzalez,
Patino-Prado relies on numerous cases holding that when the government charges a defendant with a “multi-object conspiracy,” the jury must unanimously agree as to at least one object of the conspiracy in order to return a conviction.
See United States v. Capozzi,
In one precedent relied upon by Patino-Prado, one of the legal theories submitted to the jury as a basis for a conspiracy conviction under federal wire fraud statutes was flawed because the statute did not extend to the facts of the case.
United States v. Brown,
In another cited case, the defendant’s
sentence
was vacated under Section 841(b)(l)(B)’s cocaine-related maximum where a general verdict did not clearly reveal that the jury found the defendant guilty of conspiring to possess both marihuana and cocaine.
United States v. Dale,
The cases cited by Patino-Prado do not stand for the proposition that, if the government alleges that a defendant conspired to possess several controlled substances, the jury must unanimously agree about each of the several controlled substances the defendant’s conspiracy was actually aimed at possessing.
See United States v. Toliver,
We also note that this case is a peculiarly inappropriate one for challenging the precedents involving the scope of jury unanimity on controlled substance conspiracies. Because of the jury interrogatories that we analyze in the next section, we have the jurors’ acknowledgment that they were unanimous both as to the cocaine and the marihuana conspiracies.
C. The Sentence
We turn now to Patino-Prado’s final argument, that his sentence should be vacated or reformed. As we have noted, Patino-Prado was indicted for conspiracy to possess with intent to distribute marihuana
and
cocaine. No specific amounts were alleged in the indictment and the jury was not instructed to make any findings as to the particular amount of narcotics involved in the conspiracy. Likely because the indictment was filed prior to the Supreme Court’s decision
Apprendi v. New Jersey,
Even without a jury finding of a specific quantity of a drug, a defendant may receive up to a five-year sentence for conspiring to possess with intent to distribute an unknown quantity of marihuana.
See
21 U.S.C. § 841(b)(1)(D);
see United States v. Allen,
Patino-Prado was sentenced under Section 841(b)(1)(C) to 240 months (or twenty years) in prison. He argues, that even if his conviction stands, his sentence must be either vacated or reformed to five years, the maximum penalty permissible for conviction of a marihuana-related conspiracy under 21 U.S.C. § 841(b)(1)(D). According to Patino-Prado, this is necessary because it is unclear whether the jury unanimously found that cocaine was one of the objects of Patino-Prado’s conspiracy.
Though our analysis regarding conviction discussed the acceptable ambiguity regarding which of the controlled substances was actually involved in a conspiracy, the rule as to sentencing is different. On the verdict form, jurors were instructed that if they determined Patino-Prado was guilty of the general conspiracy, they were then required also to mark on the verdict form their answers to these questions about which controlled substances were the object of the conspiracy:
If you found the Defendant Efren Patino Prado GUILTY of Count One of the Superseding Indictment, you must answer the following questions.
1. Do you find beyond a reasonable doubt that the conspiracy alleged in *313 volved a mixture or substance containing a detectable amount of cocaine?
2. Do you find beyond a reasonable doubt that the conspiracy alleged involved a mixture or substance containing a detectable amount of marihuana?
The foreman recorded the jury’s answer as “yes” to both of these questions. The jurors had in other parts of the instructions been told that their “verdict must be unanimous” and that “[t]he foreperson will write the unanimous answer of the jury in the space provided for in each count of the Superseding Indictment, either guilty or not guilty.” We find no doubt that jurors would have understood that unanimity was required for the interrogatory answers as well.
We will presume that jurors understand and follow their instructions, abandoning that presumption only when there “is an overwhelming probability that the jury will be unable to follow the instruction and there is a strong probability that the effect is devastating.”
United States v. Barksdale-Contreras,
In addition, the government presented sufficient evidence to support the jury’s verdict. We are mindful that a conspiratorial agreement to possess a controlled substance “may be implicit” and “[t]he jury may rely on presence and association, along with other evidence” in reaching its verdict.
United States v. Montgomery,
For these reasons, we find that the district judge did not err in determining that the jury found Patino-Prado guilty beyond a reasonable doubt of conspiring to possess with intent to distribute both marihuana and cocaine. As such, the district judge selected the correct statutory maximum sentence for an unknown quantity of cocaine — twenty years under Section 841(b)(1)(C).
We AFFIRM the conviction and the sentence.
Notes
. During opening argument at trial, defense counsel made the following statements: “Mr. Patino-Prado was involved in a marihuana conspiracy. There is no doubt about it. He accepts responsibility for that .... Mr. Pati-no-Prado, yes, he was involved in a marihuana conspiracy. He had nothing to do with the cocaine, he didn’t know the cocaine was there until after it was found by the police.”
. The government argues that Patino-Prado invited any error that may have produced a less-than-unanimous jury verdict (as to which particular controlled substance was the object of the conspiracy) because he opposed a unanimity instruction following the special interrogatories. According to the government, Pa-tino-Prado may not ask this court to correct an error which he induced the district court to commit.
See United States v. Lopez-Escobar,
. After
Apprendi,
courts have required that drug quantities be alleged in the indictment and proven beyond a reasonable doubt at trial before a defendant may be subjected to the enhanced penalties under 21 U.S.C. § 841(b)(1)(B).
United States v. Doggett,
