The White House announced reinstatement of tariffs on aluminum yesterday. The Tariffs would go into effect August 16, 2020.

Presidential proclamation: https://www.whitehouse.gov/presidential-actions/proclamation-adjusting-imports-aluminum-united-states-080620/

This goes against the actual data, which shows that aluminum imports are actually down: https://www.aluminum.org/news/latest-us-data-primary-aluminum-imports-canada-decline-june

Even the US Aluminum Association, arguably the ones most likely to gain from tariff protection, is opposed to the tariff: https://www.aluminum.org/news/reinstating-section-232-aluminum-tariffs-wrong-approach-us-industry

Canada has already pledged retaliation:
https://www.theguardian.com/world/2020/aug/07/canada-us-tariff-aluminum

PMPA PRESS RELEASE – 232 ALUMINUM REINSTATEMENT – 200807