Hickenlooper Amendment (US, 1962)

The Hickenlooper Amendment (US, 1962) is the provision of the Foreign Assistance Act, added in 1962 and codified at 22 U.S.C. § 2370(e), that requires the President to suspend assistance to any government that expropriates the property of US citizens or corporations without taking appropriate steps toward adequate compensation within six months. Sponsored by Senator Bourke Hickenlooper, it wrote expropriation-triggered sanctions into standing law, making aid denial the automatic penalty for uncompensated nationalisation.

Provisions and trigger

The amendment's trigger is the seizure, nationalisation, or repudiation of contracts affecting American-owned property without adequate compensation under international law. Its sanction is mandatory suspension of foreign assistance. Congress adopted it after a wave of early-1960s expropriations, the seizure of an ITT subsidiary in Brazil prominent among them, against an executive branch that opposed mandatory triggers as a diplomatic straitjacket. A companion provision added in 1964, the so-called Second Hickenlooper or Sabbatino Amendment (22 U.S.C. § 2370(e)(2)), reversed the Supreme Court's holding in Banco Nacional de Cuba v. Sabbatino, 376 U.S. 398 (1964), by directing US courts not to apply the act of state doctrine to bar adjudication of expropriation claims contrary to international law.

Employment history

Formal application was rare. The canonical case is Ceylon: assistance was suspended in 1963 after the nationalisation of foreign oil-distribution assets and restored after a compensation settlement in 1965. Elsewhere the amendment operated as a shadow: executives certified around it, negotiated compensation before the six-month clock ran, or, as with Peru's seizure of the International Petroleum Company in 1968, conspicuously declined to invoke it while applying quieter pressure. Later amendments added waiver authority, completing its domestication.

Effects

Assessments diverge. Investment-protection scholarship, Lipson's among it, judges the amendment largely ineffective and sometimes counterproductive: mandatory sanctions hardened nationalist positions, and the executive treated the statute as an obstacle to settlement rather than leverage. Its durable significance is doctrinal: it established the template of congressionally mandated, conduct-triggered economic sanctions that constrain executive discretion, the lineage running through the Jackson-Vanik Amendment (US, 1974) to the Symington and Glenn Amendments (US, 1976 and 1977) and beyond, and it anchors expropriation disputes in the machinery of aid conditionality.

The provisions remain in force in the current 22 USC 2370 compilation, subject to later amendments and presidential exceptions. Section 620(e)(1) is the first Hickenlooper aid-cutoff rule. Section 620(e)(2) is the second Hickenlooper act-of-state rule responding to Sabbatino. One conditions foreign aid; the other directs judicial choice of law. They are related but not interchangeable sanctions.

See also

Foreign aid conditionality · Expropriation and nationalisation as economic weapon · Jackson-Vanik Amendment (US, 1974) · Symington and Glenn Amendments (US, 1976 and 1977) · Helms-Burton Act (1996) · Economic warfare · Economic statecraft

Sources

• 22 USC 2370, accessed 30 July 2026.
• Foreign Assistance Act amendments, Public Law 87-565, accessed 30 July 2026.
• *Banco Nacional de Cuba v Sabbatino*, US Reports, accessed 30 July 2026.
• Foreign Assistance Act compilation, current through 3 February 2026, accessed 30 July 2026.
• Charles H. Lipson, "Corporate Preferences and Public Policies", accessed 30 July 2026.