So far, there's no news on the European Union's bid for a valuable exemption. Mariam Zaidi brings us this report from Brussels.

Ever since U.S. President Donald Trump made his announcement to impose tariffs based on national security, the EU has carefully prepared a series of counter measures and initiated an investigation to safeguard their industries and exports from any impact from U.S. tariffs. Europe is worried that foreign companies that lose their U.S. market share could divert their attention to the EU, leaving the market saturated.

WOUTER VAN GULCK, GENERAL MANAGER FEDERATION OF BELGIAN CHAMBERS OF COMMERCE "Our companies will have a problem. They will be confronted with new influx of steel, aluminium and maybe other products in the long term. Which makes it more difficult for our companies to remain competitive."

And a week before the metals exemption ends, the bloc has now joined China in seeking reprieve from the U.S. at the World Trade Organization.

GUNTRAM WOLFF, DIRECTOR BRUEGEL ECONOMIC THINK TANK "In any case, it is clear that these steel and aluminium tariffs are certainly not in line with the spirit of the WTO and probably the law of the WTO. And I think it was right step that the EU has filed a legal case at WTO against these tariffs and they will win."