The 25% tariffs on imported steel could be a boon for Cleveland producers like Cleveland-Cliffs, but hurt manufacturers and consumers.

President Donald Trump on Monday imposed a 25% tariff on all steel and aluminum imports into the United States with no exceptions or exemptions.

The European Union estimates that the first wave of Donald Trump’s steel and aluminum tariffs will hit as much as €28 billion ($29.3 billion) of the bloc’s exports in what would be a massive escalation in the US president’s trade war.

The European Commission is investigating whether to tighten its current system of quotas on steel imports to protect EU producers from new tariffs U.S. President Donald Trump plans to impose on incoming steel and aluminium on March 12.

The president, who has threatened and delayed other tariffs, said he will announce the measures Monday. Canada and Mexico are among the top U.S. steel suppliers.

The amount of goods would be about four times larger than the last time Trump targeted the bloc’s metals sector.

The European Union estimated that the first wave of tariffs on steel and aluminium imposed by US President Donald Trump will result in a hit to EU exports worth up to €28 billion (approx. US$29.3 billion).