Mae'r ddwy lywodraeth wedi nodi'n glir o’r blaen na allant argymell y dylid rhoi cydsyniad deddfwriaethol  i gynigion Llywodraeth y DU gan eu bod yn gosod cyfyngiadau annerbyniol ar y pwerau datganoledig presennol, a chan eu bod hefyd yn anymarferol ac  yn amhosibl eu gweithredu.
Both governments have previously made clear that they could not recommend legislative consent is given to the UK government’s proposals as they impose unacceptable constraints on current devolved powers, and are impractical and unworkable in practice.