this is what trump can do :

Statutory Fallback Options for Tariffs
Statute	Authority & Purpose	Key Limitations & Procedures	Time Frame for Action	Previous Uses
Section 232 (Trade Expansion Act of 1962)	Address imports that threaten national security .	Requires Commerce Dept. investigation; no tariff rate cap; designed for specific sectors, not countries .	Investigation must conclude within 270 days .	Steel, aluminum, autos, copper (2018–present) .
Section 201 (Trade Act of 1974)	Provide temporary relief for domestic industries injured by surge in imports .	Requires USITC investigation with public hearings; tariff capped at 50% ; max duration 8 years with phase-down .	USITC has 180 days after petition to report .	Solar panels, washing machines (2018) .
Section 301 (Trade Act of 1974)	Respond to foreign countries' discriminatory or unfair trade practices .	Requires USTR investigation with public comment; no tariff rate cap; duties terminate after 4 years unless renewed .	Investigation time varies; public consultation required .	Tariffs on China (2018), investigation into Brazil (2025) .
Section 122 (Trade Act of 1974)	Address large and serious balance-of-payments deficits .	No investigation required; tariff capped at 15% ; max duration 150 days ; Congressional approval needed to extend .	Can be imposed immediately .	Never used .
Section 338 (Smoot-Hawley Tariff Act of 1930)	Counter foreign countries' discriminatory or unreasonable trade practices .	No investigation required; tariff capped at 50% ; no set duration, but use would likely invite legal challenges .	Can be imposed imm	Never used