Business chiefs and government leaders are poring over the fallout of a U.S. Supreme Court decision that invalidated some tariffs by President Donald Trump's administration and his response to it.

The British government says the troubles are “teething problems,” but companies say they are causing serious pain. A post-Brexit U.K.-EU trade deal means goods can still move without tariffs or quotas, but businesses face new costs, paperwork and barriers. British, Irish and Northern Ireland politicians all expressed alarm at the plan, and the EU dropped the idea. Trade expert David Henig of the European Centre for International Political Economy said the British government was not levelling with people. “They are saying ‘teething problems’ when it is actually a permanent economic shift,” he said.