We have been clear throughout that no arrangements should be agreed which disadvantage Welsh ports and transit routes to Ireland relative to those in other parts of the UK.
Buom yn glir erioed na ddylid cytuno ar unrhyw drefniadau sy'n peri anfantais i borthladdoedd Cymru a llwybrau croesi i Iwerddon o'u cymharu â'r rhai mewn rhannau eraill o'r DU.