From what I read these tariffs are under the guise of emergency measures so avoid Congress.
It would seem unlikely that any tariff on the EU could be considered emergency so would presumably take a while to pass.
U.S. Tariff Policy: Overview
Presidential Discretionary Authority over Tariff Rates.
In dozens of statutes, Congress has authorized the President
to adjust tariff rates in response to specific trade-related
concerns related to U.S. foreign policy and national security
interests, or that require an administrative finding by a U.S.
agency. For example, Section 232 of the Trade Expansion
Act of 1962 empowers the President to adjust tariffs on
imports that threaten to impair U.S. national security.
Section 5(b) of the Trading with the Enemy Act and Section
203 of the International Emergency Economic Powers Act
empower the President in a time of war or emergency to
impose tariffs on imports. Section 201 of the Trade Act of
1974 empowers the President to raise tariff rates
temporarily when the U.S. International Trade Commission
(ITC) determines that a sudden import surge has caused or
threatened serious injury to a U.S. industry. Congress has
also empowered U.S. agencies to impose duties to offset
certain injurious trade practices