someone posted this earlier today:
The Trade Act of 1974 gives potus authority.
https://www.govinfo.gov/content/pkg/COMPS-10384/pdf/COMPS-10384.pdf
Trade Act of 1974 (excerpt)
SEC. 122. BALANCE-OF-PAYMENTS AUTHORITY.
(a) Whenever fundamental international payments problems require special import measures to restrict imports—
(1) to deal with large and serious United States balanceof- payments deficits,
(2) to prevent an imminent and significant depreciation of the dollar in foreign exchange markets, or
(3) to cooperate with other countries in correcting an international balance-of-payments disequilibrium, the President shall proclaim, for a period not exceeding 150 days (unless such period is extended by Act of Congress)—
(A) a temporary import surcharge, not to exceed 15 percent ad valorem, in the form of duties (in addition to those already imposed, if any) on articles imported into the United States;
[unverified by me]
Lindsay Graham’s Big Beautiful Bill is full of National Security Trade Powers for the President - this is now law. SCOTUS must decide if Graham and Trump’s power grab was too much to be legal.
It appears Trump is at WAR with Russia via Sanctions against the entire world.
For 150 days, not to exceed 15% ad valorem.