Ers lansio'r Papur Gwyn, cytunwyd y dylai'r Llywodraeth gynnwys pwerau yn y Bil Llywodraeth Leol ac Etholiadau (Cymru) i greu un mecanwaith ar gyfer gweithio’n rhanbarthol – sef y Cyd-bwyllgorau Statudol ar hyn o bryd. Mae angen cysoni a symleiddio pethau a'r uchelgais yw y bydd Cyd-bwyllgorau Statudol yn sicrhau hynny wrth reoli trefniadau cydweithredol ar gyfer gweithio’n rhanbarthol, gan barhau i gadw llygad a rheolaeth ddemocrataidd ar yr un pryd.
Since the launch of the White Paper, it has been agreed that the Government should include powers in the Local Government and Elections (Wales) Bill, to enable the creation of a single mechanism for regional working – currently referred to as Statutory Joint Committees. The ambition is that Statutory Joint Committees will deliver the coherence, consistency and simplification needed for governing collaborative regional working arrangements, whilst retaining democratic control and oversight.