In many Member States sub-national entities are responsible for the implementation of European regulation. Also, regional or local regulatory or administrative bodies can often best assess the impact of regulation. While national governments remain responsible vis-à-vis the European institutions, strengthening the direct link between the European and sub-national level may be desirable. Sub-national regulatory and administrative bodies should have a bigger role in the Better Regulation Strategy, possibly through a stronger involvement of the Committee of Regions.
The respective wiki article that is referred to is found here.