Mae’r Cynulliad wedi cydsynio i Senedd San Steffan ddeddfu mewn meysydd datganoledig, gan ymddiried y byddai’r Senedd yn cael cyfle i basio’r ddeddfwriaeth honno. Drwy gau’r Senedd, mae Prif Weinidog y Deyrnas Unedig wedi rhwystro’r broses honno ac atal y Senedd rhag deddfu ar y telerau ymadael. Gallai hyn olygu y bydd rhaid i’r Cynulliad gyflwyno deddfwriaeth newydd mewn amser cyfyngedig iawn yn y meysydd hanfodol hyn.
The Assembly has given its consent to Parliament to legislate in devolved areas, trusting that Parliament would have the opportunity to pass that legislation. By closing down Parliament, the Prime Minister has frustrated this process and has prevented Parliament from legislating for the terms of exit. This may result in the Assembly having to bring forward new legislation in very limited time in these crucial areas.