Nododd Gweinidogion Llywodraeth y DU y gwelliannau a gynigiwyd gan Lywodraeth Cymru i Fil y Cytundeb Ymadael, gan fy sicrhau y byddent yn cael eu hystyried yn ofalus. Pwysleisiais y byddai Llywodraeth Cymru yn argymell i Senedd Cymru na ddylai gydsynio i’r  Bil ar ei ffurf bresennol. Dywedais yn glir y byddai hon yn foment gyfansoddiadol arwyddocaol iawn ac y byddai gofyn i Lywodraeth y DU a Senedd San Steffan ystyried o ddifrif a chan ddangos parch, cyn penderfynu bwrw ymlaen pe bai Senedd Cymru wedi peidio â rhoi ei chydsyniad.
UK Ministers noted the Welsh Government’s proposed amendments to the Withdrawal Agreement Bill (WAB) and assured me that these would be carefully considered. I stressed that the Welsh Government’s recommendation to the Senedd would be not to consent to the Bill as it stands. I made clear that this would be a very significant constitutional moment and would require serious and respectful consideration by the UK Government and by Parliament, if they elected to proceed in the event the Senedd were to withhold consent.