Economy February 23, 2026

White House Weighs New National Security Tariffs Targeting Key Industrial Supply Chains

Administration may pursue Section 232 levies on roughly six industrial categories after a Supreme Court decision curtailed prior measures

By Nina Shah
White House Weighs New National Security Tariffs Targeting Key Industrial Supply Chains

The White House is considering imposing a fresh set of national security tariffs across about six industrial categories following a Supreme Court decision that struck down much of earlier tariff authority. The proposed duties would be issued under Section 232 of the Trade Expansion Act of 1962 and are planned to be separate from recently announced temporary levies of 15% that can remain in place for up to 150 days before congressional approval is sought.

Key Points

  • The administration is considering new national security tariffs on about six industrial sectors after a Supreme Court ruling invalidated much of prior tariff authority - sectors named include large-scale batteries, cast iron and iron fittings, plastic piping, industrial chemicals, and power grid and telecom equipment.
  • Any new levies would be issued under Section 232 of the Trade Expansion Act of 1962, which grants the President broad power to impose tariffs on national security grounds.
  • These contemplated Section 232 actions are separate from recently announced temporary 15% levies, which can be kept in place for up to 150 days before congressional approval is required; existing Section 232 tariffs on steel, aluminum, copper and automobile parts remain unaffected.

Senior administration officials are weighing a new package of tariffs that would invoke national security authority to cover roughly six industrial areas, sources familiar with the plans said. The move follows a Supreme Court ruling last week that deemed much of the President's earlier tariff program illegal.

The industries named as potential targets include large-scale batteries, cast iron and iron fittings, plastic piping, industrial chemicals, and equipment used on power grids and in telecommunications. Those sectors would be the focus of any fresh Section 232 actions, according to the people briefed on internal deliberations.


Legal basis and timing

The contemplated tariffs would be imposed under Section 232 of the Trade Expansion Act of 1962, the statute that grants the President broad authority to levy duties when imports are judged to pose a national security risk. The contemplated actions would be issued separately from a set of temporary levies the administration announced after the court decision on Friday.

Those recently announced levies carry a 15% rate and can be maintained for 150 days without congressional authorization. The administration has indicated it can keep those temporary duties in place for that period while pursuing alternative or additional measures under Section 232.


Existing Section 232 measures unaffected

Previously imposed tariffs under Section 232 - covering products such as steel, aluminum, copper and automobile parts - remain in effect and are not altered by the Supreme Court ruling, according to the information provided by officials familiar with the matter.

The administration's consideration of a new slate of duties reflects an effort to use the 232 authority to address perceived risks in specific industrial supply chains. The deliberations are ongoing and officials have identified the six industry groups as possible subjects for the next round of national security tariffs.


What to watch

  • Whether the administration formally issues new Section 232 proclamations targeting the listed industries.
  • How the temporary 15% levies announced after the court decision are managed during the 150-day window before congressional action might be required.
  • Which firms and supply chains within the named sectors could face additional import costs if new tariffs are implemented.

The situation is evolving as officials continue to evaluate the scope and application of Section 232 in the wake of the court ruling. Details on any final decisions, timing, or specific product categorizations would be released if and when the administration moves forward with formal determinations.

Risks

  • Uncertainty over whether the administration will formalize new Section 232 proclamations could create planning challenges for manufacturers and suppliers in the listed sectors - particularly batteries, piping, industrial chemicals, and components for power grid and telecom networks.
  • Timing and application of the temporary 15% levies during the 150-day window could leave importers and downstream users exposed to interim cost changes before any congressional review or alternative measures are adopted.
  • The scope of any new tariffs under Section 232 could alter procurement strategies and sourcing decisions within affected supply chains, introducing execution and compliance risks for firms operating in the named industries.

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