WASHINGTON (AP) — On Wednesday, a federal court halted President Donald Trump’s broad tariffs on imports, using an emergency-powers law. This decision promptly cast uncertainty over Trump’s major economic initiatives that had unsettled global markets, annoyed trade partners, and stoked broader concerns about rising inflation and a potential economic downturn.

The decision was issued by a three-judge panel from the U.S. Court of International Trade in New York. The ruling followed multiple lawsuits which claimed that Trump’s “Liberation Day” tariffs exceeded his legal authority and made the nation’s trade policy subject to his personal discretion.

Trump had often stated that these tariffs would compel manufacturers to return factory jobs to the United States and generate enough income to decrease federal budget deficits. He employed tariffs as a strategic tool to pressure other nations into making trade deals advantageous to the U.S., implying that he would set tariffs unilaterally if the negotiated terms were not in favor of the U.S.

White House spokesperson Kush Desai said that trade deficits amount to a national emergency “that has decimated American communities, left our workers behind, and weakened our defense industrial base — facts that the court did not dispute.”

The administration, he said, remains “committed to using every lever of executive power to address this crisis and restore American Greatness.”

But for now, Trump might not have the threat of import taxes to exact his will on the world economy as he had intended, since doing so would require congressional approval. What remains unclear is whether the White House will respond to the ruling by pausing all of its emergency power tariffs in the interim.

Trump might still be able to temporarily launch import taxes of 15% for 150 days on nations with which the U.S. runs a substantial trade deficit. The ruling notes that a president has this authority under Section 122 of the Trade Act of 1974.

The ruling amounted to a categorical rejection of the legal underpinnings of some of Trump’s signature and most controversial actions of his four-month-old second term. The administration swiftly filed notice of appeal — and the Supreme Court will almost certainly be called upon to lend a final answer — but it casts a sharp blow.

The case was heard by three judges: Timothy Reif, who was appointed by Trump, Jane Restani, named to the bench by President Ronald Reagan and Gary Katzman, an appointee of President Barack Obama.

“The Worldwide and Retaliatory Tariff Orders exceed any authority granted to the President by IEEPA to regulate importation by means of tariffs,” the court wrote, referring to the 1977 International Emergency Economic Powers Act.

The ruling left in place any tariffs that Trump put in place using his Section 232 powers from the Trade Expansion Act of 1962. He put a 25% tax on most imported autos and parts, as well as on all foreign-made steel and aluminum. Those tariffs depend on a Commerce Department investigation that reveals national security risks from imported products.

It was filed in the U.S. Court of International Trade, a federal court that deals specifically with civil lawsuits involving international trade law.

While tariffs must typically be approved by Congress, Trump has said he has the power to act to address the trade deficits he calls a national emergency.

He is facing at least seven lawsuits challenging the levies. The plaintiffs argued that the emergency powers law does not authorize the use of tariffs, and even if it did, the trade deficit is not an emergency because the U.S. has run a trade deficit with the rest of the world for 49 consecutive years.

Trump imposed tariffs on most of the countries in the world in an effort to reverse America’s massive and long-standing trade deficits. He earlier plastered levies on imports from Canada, China and Mexico to combat the illegal flow of immigrants and the synthetic opioids across the U.S. border.

His administration argues that courts approved then-President Richard Nixon’s emergency use of tariffs in 1971, and that only Congress, and not the courts, can determine the “political” question of whether the president’s rationale for declaring an emergency complies with the law.

Trump’s Liberation Day tariffs shook global financial markets and led many economists to downgrade the outlook for U.S. economic growth. So far, though, the tariffs appear to have had little impact on the world’s largest economy.

The lawsuit was filed by a group of small businesses, including a wine importer, V.O.S. Selections, whose owner has said the tariffs are having a major impact and his company may not survive.

A dozen states also filed suit, led by Oregon. “This ruling reaffirms that our laws matter, and that trade decisions can’t be made on the president’s whim,” Attorney General Dan Rayfield said.

Oregon Sen. Ron Wyden, top Democrat on the Senate Finance Committee, said the tariffs had “jacked up prices on groceries and cars, threatened shortages of essential goods and wrecked supply chains for American businesses large and small.″