That was under IEEPA [1]. This is under § 338 of the Tariff Act of 1930 [2]. (There is another tariff effort under § 122 of the Trade Act of 1974 winding its way through the courts [3].

We probably need a Tariff Powers Act that consolidates and curtails Presidential power to unilaterally fuck with trade.

[1] https://en.wikipedia.org/wiki/International_Emergency_Econom...

[2] https://www.law.cornell.edu/uscode/text/19/1338#:~:text=Prio...

[3] https://libertyjusticecenter.org/cases/burlap-and-barrel-inc...