President Donald Trump signed a proclamation on Monday that modifies Section 232 tariffs on a subset of imports tied to steel, aluminum and copper, according to a statement posted on the White House website. The action narrows the higher national security tariffs that have applied to certain downstream products.
The proclamation lowers the tariff rate on some steel and aluminum derivative goods from 25% to 15%. The White House specifically cited categories that include certain types of agricultural machinery and components used in residential heating, ventilation and air conditioning systems.
In addition, the administration said mobile industrial equipment - examples provided include bulldozers and forklifts - will be subject to a 15% tariff when these items are imported from countries that qualify under existing trade deal provisions that the proclamation recognizes for preferential treatment.
The tariff adjustments will apply to qualifying shipments imported or withdrawn from bonded warehouses beginning at midnight on June 8. The statement noted that the reduced rates will remain in place through December 31, 2027, with the stated goal of encouraging near-term investments to help rebuild the nation’s industrial base.
The White House framed the changes as temporary measures linked to an investment objective, specifying the December 31, 2027 end date. The proclamation records the new effective date and the scope of goods covered, but it does not provide additional detail in the statement about further implementation steps or monitoring mechanisms.
What this means for affected sectors
- Manufacturing and heavy equipment sectors that import parts or finished machinery may see lower tariff costs on specified products covered by the proclamation.
- Residential HVAC and agricultural machinery manufacturers and distributors are explicitly mentioned as categories included in the reduced tariff list.
- Trade flows for mobile industrial equipment imported from qualifying trade deal countries will be affected by the recalibrated 15% duty rate.
The proclamation is presented as a near-term policy change intended to influence investment decisions through a set expiration date. The White House emphasized the objective of spurring investments that will contribute to rebuilding the industrial base, but the statement does not attach quantitative targets or evaluation criteria to measure that outcome.