President Trump met with top European officials demanding fairer trade with the 27-member European Union at his golf course on the Scottish coast.

The European Union and the US appear to differ on some fundamental details in their new trade agreement, underscoring the difficulty they’ll have in turning this deal into a reality.The EU said it would accept a 15% tariff on nearly all its exports to the US.

Trump had most recently threatened tariffs of 30% on imports from the European Union. But on Sunday, he met with the president of the European Commission, and they agreed to a lower level.