The CIT ruled the Executive Orders enacting the tariffs are declared to be invalid as they exceed the authority of the president to regulate importation by means of tariffs.

The rulings against the levies in two federal courts – the U.S. Court of International Trade and the U.S. District Court in Washington, D.C. -- centered on Trump's unprecedented invocation of the International Economic Emergency Powers Act as a legal justification for tariffs.

President Donald Trump returned to the White House in January determined to overturn decades of American policy and build a tariff wall around a U.S. economy that used to be pretty much wide open to foreign products.

Live updates and the latest news on the Trump administration as Elon Musk leaves the White House and a federal trade court rules against Trump's tariffs.

Robert Armstrong, US Financial Commentator for the Financial Times and Charlotte Howard, Executive Editor for The Economist join Nicolle Wallace on Deadline White House with reaction to the federal trade court’s ruling on some of Trump’s tariffs,

Trump said he would increase steel import tariffs to 50 percent, a move expected to impact U.S. manufacturers and trade relationships with Canada and China.