The UK and EU have formally set out plans for World Trade Organization commitments post-Brexit, but they have already been opposed by some countries.
The issue is about how much of certain goods can be imported at reduced tariffs after Brexit.
These quotas currently apply to imports anywhere in the EU.
But seven nations, including the US and Canada, have already made it clear that they think plans to divide existing quotas will put them at a disadvantage.
After Brexit, exporters of goods will need to know what access they can expect to the separate markets of the UK and EU.
The dissenting nations object