Analysis

Understanding The Legal Framework of Money Laundering Defense

July 2026 · 6 min read · John D. Kirby, Former Federal Prosecutor

The defense of money laundering under 18 U.S.C. § 1956 is a critical area for federal criminal defendants and their attorneys. Understanding the specific elements that the government must prove to establish a violation of this statute can mean the difference between conviction and acquittal.

Statutory Framework

The core money laundering provisions are found in 18 U.S.C. § 1956, which outlines various ways one may launder money or attempt to do so. The section broadly prohibits financial transactions involving proceeds of certain crimes with the intent to promote further criminal activity, conceal the origin of the funds, evade taxes, or defraud others.

Specified Unlawful Activity Requirement

A key element under 18 U.S.C. § 1956 is demonstrating that the money involved in a transaction originates from a "specified unlawful activity" (SUA). The list of SUAs includes federal and state crimes involving fraud, bribery, extortion, drug trafficking, murder for hire, gambling offenses, racketeering activities, terrorism financing, and more. For a defendant to be found guilty under § 1956, the prosecution must prove that the funds in question were derived from one of these listed criminal acts.

Knowledge of Criminal Origin

The government also bears the burden of proving beyond a reasonable doubt that the defendant knew or should have known about the illegal source of the funds. This knowledge requirement is stringent, and it's not enough for prosecutors to show mere suspicion; they must demonstrate specific intent on the part of the accused regarding the nature of the transaction's proceeds.

Structuring

Under 18 U.S.C. § 1956, structuring refers to breaking down financial transactions into smaller amounts intended to evade reporting requirements under federal law (e.g., cash deposits exceeding $10,000). To be convicted of money laundering by structuring, the prosecution must show that the defendant designed the transactions with the specific intent to avoid filing Currency Transaction Reports or other similar documentation.

Bulk Cash Smuggling

Money laundering through bulk cash smuggling is another area scrutinized under 18 U.S.C. § 1956(h). This provision targets individuals who transport large amounts of currency across international borders with the intent to conceal it from financial reporting and regulatory oversight. To secure a conviction, prosecutors must establish not only that the defendant moved significant sums but also their purposeful attempt at evasion.

These defenses hinge on meticulous legal analysis and factual investigation. For defendants facing money laundering charges under 18 U.S.C. § 1956, challenging each of these elements can provide a robust defense strategy.

← Back to Practice Area