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

China hits back with export controls, Canada and Mexico remain under threat. USPS closes then reopens "de minimis" small package loophole

After a 10 percent tariff on Chinese products took effect on Tuesday, China announced retaliatory measures, including tariffs and an investigation of Google.

The 25 percent tariffs on imported steel and aluminum are the latest salvo in his ongoing effort to overhaul the U.S. trading relationship with the rest of the world.

President Donald Trump ordered a 25% tariff on steel and aluminum imports, escalating his efforts to protect politically important US industries with levies hitting some of the country’s closest allies.

U.S. President Donald Trump's 25% tariffs on steel and aluminium sent gold to record highs on worries of widening trade conflict and inflation, while some countries held out hope for negotiations and Chinese steel firm shares came under pressure.

Trump reiterated as he signed the proclamations that more tariffs would be coming on computer chips, autos and pharmaceutical drugs. But the president said that the import taxes would eventually enable more steel mills and aluminum plants to open in the U.S. to avoid the tariffs.

President Donald Trump signed an order Monday to impose a 25% tariff on all steel and aluminum imports to the United States.

President Donald Trump’s desire to get even on countries by matching tariffs they have on American goods could come at a steep cost.