The Countering America's Adversaries Through Sanctions Act (CAATSA) was signed into law by President Donald Trump on August 2, 2017, after passing Congress with veto-proof majorities (98–2 in the Senate, 419–3 in the House). It consolidates and expands U.S. sanctions authorities against three principal targets: Russia, Iran, and North Korea, with each addressed in a separate title of the Act.
Title I (Iran) primarily targets Iran's ballistic missile program, support for terrorism, human rights abuses, and arms transfers in violation of UN Security Council resolutions. Title II (Russia), formally the Countering Russian Influence in Europe and Eurasia Act, codifies prior executive orders issued in response to Russia's 2014 annexation of Crimea and intervention in Ukraine, and adds new measures responding to interference in the 2016 U.S. election. It notably constrains the President's ability to lift Russia sanctions without congressional review. Title III (North Korea), the Korean Interdiction and Modernization of Sanctions Act, tightens restrictions on shipping, financial transactions, and labor exports linked to the DPRK.
A widely discussed provision is Section 231, which authorizes secondary sanctions on persons engaging in "significant transactions" with Russia's defense or intelligence sectors. This provision has affected third-country procurement decisions: in 2018, the U.S. sanctioned China's Equipment Development Department for purchasing Su-35 aircraft and S-400 missile systems, and in 2020 Turkey was sanctioned under Section 231 for its acquisition of the S-400.
CAATSA also requires periodic reports to Congress, including the so-called "oligarchs list" submitted by the Treasury in January 2018 identifying senior Russian political figures and businesspeople. The Act effectively shifted U.S. sanctions policy toward Russia from executive discretion to statutory permanence, complicating diplomatic flexibility and creating friction with NATO allies whose defense procurement decisions fall within its reach.
Example
In December 2020, the U.S. invoked CAATSA Section 231 to sanction Turkey's Presidency of Defense Industries (SSB) over its purchase of the Russian S-400 air defense system.
Frequently asked questions
The U.S. Treasury's Office of Foreign Assets Control (OFAC) and the State Department jointly implement designations, with Treasury handling financial measures and State managing Section 231 defense-sector determinations.
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