Division number 57 – in the House of Commons on 6 Rhagfyr 2017.
A majority of MPs disagreed and wedi pleidleisio to prevent Welsh and Scottish ministers making regulations which amend, or are inconsistent with, EU law retained as part of UK law following the UK's withdrawal from the union.
Eisiau deall mwy am y bleidlais hon? Darllenwch y ddadl yr oedd yn rhan ohoni.