The material support statute (18 U.S.C. 2339B) is a federal criminal law that prohibits providing material support or resources to designated foreign terrorist organizations (FTOs). Congress passed the original statute in 1996 and significantly expanded it through the USA PATRIOT Act of 2001. Material support is broadly defined to include money, financial services, lodging, training, expert advice, personnel, weapons, lethal substances, transportation, and communications equipment.
The statute carries penalties of up to 20 years in federal prison, or life imprisonment if the support results in death. A defendant must know the organization is designated as an FTO or has engaged in terrorism, but does not need to intend to further the organization's terrorist activities. The Supreme Court upheld the statute in Holder v. Humanitarian Law Project (2010), ruling that even speech and advocacy coordinated with a designated organization can constitute material support.
The statute's breadth creates significant First Amendment tension. Academics who publish research, journalists who conduct interviews, lawyers who provide legal representation, and civil society organizations that engage with groups later designated as FTOs can all face prosecution. As the 2026 counterterrorism strategy directed FTO designations of European left-wing groups, the statute extends criminal reach into academic, journalistic, and political organizing activity.
The material support statute is one of the most powerful counterterrorism tools the government possesses because it reaches anyone who provides any form of support to a designated group — without requiring proof they intended harm. A donor who gave money before a designation, a researcher who attended a conference, or a lawyer who filed a brief can face 20-year sentences. As the government designates more organizations as FTOs, the statute extends its reach further into civil society.
People assume the material support statute only applies to people who knowingly help terrorists plan attacks. In fact, the statute reaches anyone who provides services or support to a designated organization, regardless of whether they supported its violent activities. The Supreme Court has upheld the statute even when applied to groups providing lawful humanitarian aid to organizations with both violent and non-violent wings.
The material support statute is one of the most powerful counterterrorism tools the government possesses because it reaches anyone who provides any form of support to a designated group — without requiring proof they intended harm. A donor who gave money before a designation, a researcher who attended a conference, or a lawyer who filed a brief can face 20-year sentences. As the government designates more organizations as FTOs, the statute extends its reach further into civil society.
People assume the material support statute only applies to people who knowingly help terrorists plan attacks. In fact, the statute reaches anyone who provides services or support to a designated organization, regardless of whether they supported its violent activities. The Supreme Court has upheld the statute even when applied to groups providing lawful humanitarian aid to organizations with both violent and non-violent wings.