Rhaid i nwyddau a phobl allu symud yn ddirwystr trwy borthladdoedd Cymru ar ôl Brexit rhag niweidio economi Cymru, meddai Ysgrifennydd yr Economi Ken Skates heddiw.
Goods and people must be able to move freely through Welsh ports after Brexit so not to damage the Welsh economy, Economy Secretary Ken Skates warned today.