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Conspiracy Charges in Federal White Collar Cases
The Function of Conspiracy in Federal Prosecution
Conspiracy is the charge that makes every other count in a white collar indictment more dangerous. It does not describe a separate act of wrongdoing so much as it describes the architecture of the wrongdoing itself, the agreement between persons that precedes, accompanies, and outlasts the substantive offense. Federal prosecutors in the Southern and Eastern Districts of New York treat conspiracy as the load-bearing element of multi-defendant financial cases, and they do so because the charge, once established, alters the rules of evidence and the scope of liability in ways that no other count can replicate.
Under 18 U.S.C. § 371, the general federal conspiracy statute, the crime is the agreement. Not the fraud. Not the wire transfer. Not the falsified document. The agreement to commit the offense, coupled with a single overt act by any member of the conspiracy, completes the crime. A defendant may be convicted of conspiracy even if the underlying offense was never accomplished, even if no money changed hands, even if the scheme collapsed before it produced a single victim.
What this means in practice is that the conspiracy count appears in virtually every multi-defendant white collar indictment the Department of Justice files. It appeared alongside wire fraud charges in the GPB Capital prosecution in 2024. It accompanied bribery and honest services fraud in the Menendez case. It structured the FCPA prosecution of Glenn Oztemel in the Petrobras matter. The charge functions as an adhesive that binds co-defendants together, subjects each to the conduct of all, and opens evidentiary doors that would otherwise remain closed.
What the Government Must Prove
The statutory language of Section 371 divides conspiracy into two prongs. The offense clause criminalizes an agreement to commit any federal crime. The defraud clause criminalizes an agreement to defraud the United States or any of its agencies by deceit, craft, or dishonest means. In white collar cases, prosecutors charge both with regularity.
Three elements must be established beyond a reasonable doubt: an agreement between two or more persons, the defendant’s knowledge of the agreement’s unlawful objective and intent to join it, and the commission of at least one overt act in furtherance of the scheme by any member of the conspiracy. The Third Circuit’s model instruction, following United States v. Dressel, requires proof of a shared unity of purpose and the intent to achieve a common unlawful goal.
The agreement need not be written. It need not be spoken aloud. In the majority of white collar prosecutions, no document exists in which the conspirators set out their understanding in plain terms. The agreement is instead inferred from conduct: the pattern of communications, the timing of transactions, the coordination of actions that would make no sense absent an underlying arrangement. In a securities fraud conspiracy, this might be a series of trades executed within minutes of an insider call.
The overt act requirement is, if we are being precise, not much of a requirement at all. The act need not be illegal. Purchasing a notebook, sending a routine email, opening a bank account: any of these will suffice if the government can connect the act to the conspiracy’s objectives. One overt act by one conspirator satisfies the element for all members. The statute does not demand that each defendant take affirmative steps. In a case involving twelve defendants, one email sent by one participant satisfies the overt act element for every person the government has linked to the agreement.
For certain conspiracy statutes outside Section 371, the threshold drops lower still. Drug conspiracy under 21 U.S.C. § 846 requires no overt act whatsoever. The agreement alone is the crime.
Pinkerton Liability and the Co-Conspirator Hearsay Exception
Two doctrines transform conspiracy from an inchoate offense into something considerably more consequential. The first is Pinkerton liability. The second is the co-conspirator hearsay exception under Federal Rule of Evidence 801(d)(2)(E). Together, they account for the reason prosecutors charge conspiracy so consistently, and for the difficulty defendants encounter when they attempt to defend against it.
Pinkerton v. United States was decided in 1946. Walter and Daniel Pinkerton were brothers charged with conspiracy and substantive counts under the Internal Revenue Code. Daniel was convicted of offenses committed by Walter, despite no evidence that Daniel had participated in those offenses. He was incarcerated at the time several of them occurred. The Supreme Court upheld the conviction: so long as the conspiracy continues and the substantive offenses are committed in furtherance of it, each conspirator is liable for the acts of all. Daniel was convicted of the substantive offenses despite his incarceration at the time they were committed.
In white collar cases, this doctrine operates with particular force. A CEO who agrees to a scheme to defraud investors may be held responsible for every wire transfer, every falsified document, every misrepresentation made by subordinates in furtherance of the conspiracy (including representations the CEO did not authorize, did not review, and in some instances could not have known about without a degree of operational awareness that few executives of large organizations actually possess). The test is foreseeability: was the substantive offense a reasonably foreseeable consequence of the conspiracy? Courts interpret this standard with considerable generosity toward the prosecution in financial fraud cases, where the range of potential criminal acts tends to be treated as inherent in the nature of the scheme itself.
The co-conspirator hearsay exception compounds the exposure. Under Rule 801(d)(2)(E), statements made by any co-conspirator during and in furtherance of the conspiracy are admissible against all members. A recorded phone call between two participants discussing the scheme can be introduced as evidence against a third participant who was not present for the call, did not hear it, and may not have known it occurred. The government must establish, by a preponderance of the evidence under Bourjaily v. United States, that a conspiracy existed and that the declarant and the defendant were both members, and that the statement was made in furtherance of its objectives. The participant need not testify.
I have observed proceedings where the volume of admissible co-conspirator statements was so large that the defendant’s own conduct occupied a comparatively small portion of the government’s case. The rest was attributable to others, spoken in rooms the defendant had never entered, and yet all of it was being offered against the individual at the defense table. The reconciliation clause in many cooperation agreements functions the way a smoke detector functions in a building that has already been condemned: technically present, operationally without meaning.
Whether the combination of Pinkerton and the hearsay exception produces equitable outcomes in every instance is a question the federal courts have not resolved, though the doctrines have survived every constitutional challenge mounted against them.
The Sentence That Follows the Charge
The five-year statutory maximum under Section 371 is a figure that obscures more than it reveals. In most white collar cases, the conspiracy count accompanies substantive charges that carry their own sentencing ranges: wire fraud under 18 U.S.C. § 1343 permits up to twenty years; money laundering under 18 U.S.C. § 1956 carries the same; securities fraud has its own computation. Sentences can run consecutively. The Federal Sentencing Guidelines treat the conspiracy as equivalent in seriousness to the underlying offense, which means the loss calculation, the number of victims, and any applicable enhancements flow into the conspiracy sentencing computation.
The conspiracy count is not a lesser charge. It is a parallel one, carrying the full weight of the underlying conduct.
The first letter from the government arrives on a Friday, more often than not. The defendant reads it at home, or at the office after everyone else has left. The terms are unfamiliar. The scope of the investigation is not yet clear. What is clear, in retrospect, is that the conspiracy charge was constructed long before that letter was sent, assembled from documents and communications the defendant had not considered in years. By the time the target becomes aware of the investigation, the government’s theory of the agreement is, in most respects, already assembled.
Withdrawal and Its Practical Limits
Withdrawal from a conspiracy is a recognized defense. The conditions attached to it are onerous. The defendant must demonstrate an affirmative act of withdrawal: a communication to co-conspirators that the defendant will no longer participate, or a disclosure to law enforcement. Silence, distance, passive departure from the group: none of these constitute withdrawal under the law.
What withdrawal accomplishes, when it is established, is more limited than most defendants expect:
- It commences the running of the statute of limitations.
- It terminates Pinkerton liability for acts committed after the date of withdrawal.
- It renders subsequent co-conspirator statements inadmissible against the withdrawing party.
It does not erase the conspiracy. The defendant remains guilty of the conspiracy up to the moment of withdrawal. Every act committed by co-conspirators before that date remains attributable.
The statute of limitations under Section 371 is five years from the last overt act. Because any co-conspirator’s act restarts the clock for all members, a conspiracy that originated a decade ago may remain within the limitations period if one participant took a single step in furtherance of the scheme within the preceding five years.
Defending Against Conspiracy in White Collar Cases
The most productive line of defense is often the most elemental: challenging whether an agreement existed. The government must demonstrate more than association, more than presence, more than knowledge of criminal activity by others. It must demonstrate a meeting of minds directed toward a common unlawful purpose. In cases involving large organizations, where dozens of employees participated in a process the government now characterizes as fraudulent, the question of who agreed to the unlawful purpose and who merely performed their duties without perceiving the broader scheme is contested with regularity.
We examine first whether the government can prove what the agreement was. In a multi-year healthcare fraud prosecution, the government may allege a single overarching conspiracy. The evidence, however, may reveal several smaller arrangements, some lawful and some not, involving different participants at different times. The single-conspiracy theory (which prosecutors prefer because it maximizes both Pinkerton liability and the reach of the hearsay exception) is often more fragile than it appears at the indictment stage. If the defense can demonstrate that the evidence supports multiple conspiracies rather than one, the case against a peripheral defendant may deteriorate, because the statements of participants in one arrangement become inadmissible against members of a separate one. We have seen results following this approach that would not have been available under a more conventional defense posture, though the analysis is intensive and the outcome is never assured.
But the cooperation decision looms over every conspiracy defense. Federal prosecutors employ the conspiracy charge to encourage cooperation, offering reduced exposure in exchange for testimony against co-defendants. The pressure is structural, constructed into the way conspiracy allocates liability across an entire group and then extends to individuals a path out of that liability by assisting the government. Whether to cooperate is among the most consequential decisions a defendant in a white collar conspiracy case will confront. It must be reached early, often before the full scope of the government’s evidence is visible. I am less certain than some of my colleagues about the optimal timing of that decision, which depends on variables that are case-specific and resistant to general advice.
The declining volume of federal white collar prosecutions (which fell to levels well below historical peaks in fiscal year 2025, with enforcement resources redirected toward immigration and other administration priorities) has led some to conclude that the risk has diminished. The cases that are filed carry the same statutory penalties, the same sentencing exposure, the same prosecutorial architecture. The conspiracy charge available to a federal prosecutor today operates under the same doctrines that obtained when the docket was three times its current size. A reduced docket does not indicate reduced consequence.
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