President Donald Trump said Tuesday that he will ask the Supreme Court for an “expedited ruling” to overturn an appeals court decision that found most of his tariffs on imports from other countries are illegal.

“If you take away tariffs, we could end up being a third-world country,” Trump told reporters at the White House.

The U.S. Court of Appeals for the Federal Circuit, in a 7-4 ruling on Friday, said that Trump does not have the authority to implement most of his tariffs.

The appeals court delayed its ruling from taking effect until Oct. 14 to allow the Trump administration time to ask the Supreme Court to take the case and overturn the decision.

“We’re going to be going to the Supreme Court, we think tomorrow, because we need an early decision,” Trump said Tuesday, arguing that the “financial fabric of our country” is at stake