U.S. President Donald Trump's tariff decisions since he took office on January 20 have shocked financial markets and sent a wave of uncertainty through the global economy.

Legal and trade experts' advice to foreign governments, companies and other clients: Assume the tariffs will resume in one form or another.

Lawrence O'Donnell celebrated Wednesday the U.S. Court of International Trade's decision to block President Trump's global tariffs.

A panel of three judges at the Court of International Trade ruled that Donald Trump didn’t have the legal right to make such broad tariff changes on his own.

"It may be a very dandy plan, but it has to meet the statute," the judge appointed by Ronald Reagan told the DOJ lawyer.

BRUSSELS, - The European Union has gained leverage in trade talks with the United States after a U.S. court cast doubt on the legality of Washington's "reciprocal" tariffs, EU officials said on Friday.