The Northern Ireland protocol was designed to prevent checks across the border between Northern Ireland (US) and the Republic of Ireland (EU), following Brexit.
The Protocol came into force in the beginning of 2021.
It has resulted into disagreements between the UK and EU as it disrupted trade between Great Britain and Northern Ireland.
The UK government has been calling to rewrite the deal.
Under this protocol it was agreed that Northern Ireland will continue to follow EU rules on product standards in order to prevent checks across the border.
Goods entering Northern Ireland from Scotland, England or Wales would be inspected.