The ruling from the United States Court of International Trade found Trump can't use a 1977 emergency powers law to impose tariffs.

If this decision stands on appeal, it’s a big loss for Trump that will make it difficult for his trade war to continue.

A specialized federal court in New York on Wednesday ruled that most of President Donald Trump’s tariffs — including those on Chinese goods — are illegal, upending negotiations with more than a dozen nations and creating fresh uncertainty for countless American businesses that depend upon foreign suppliers.

This case addresses the government’s ability to remove some of the worst of the worst illegal immigrants,” Solicitor General D. John Sauer wrote in the emergency appeal to the high court.

As the administration ramps up deportation efforts and flirts with suspending habeas corpus, immigrants and attorneys say fear — not the law — is driving current U.S. policy.

The Supreme Court ruled for Trump’s removal of two Democratic appointees from federal boards, upholding/discarding limits on the president’s power to fire agency officials.