Just as Trump pulled the US out of the WHO and Paris climate agreement, he can surely leave the WTO too. Why should other countries, accounting for 85-88% of world trade, not carry on without the US?
These rules provided, among other things, for ‘special and differential treatment’ (SDT) for developing countries, allowing them to maintain high tariffs even as rich countries cut theirs. The US took the lead in helping poorer countries to develop their infant industries with higher tariffs. Trump now decries that as “unfair.”