The American Primary Aluminum Association said in a letter to President-elect Joe Biden that the remaining US aluminum smelters could be forced to close if the Trump administration lifted import tariffs.

(APAA), the American primary aluminum association, which represents Century Aluminium (Century Aluminum Co.) and Magnitude 7 Metals LLC, has been a staunch supporter of President Trump's 10 per cent tariff on imported aluminum. This position is at odds with another industry group that represents other manufacturers of aluminium parts that do not support tariffs.