“Rydw i’n hynod bryderus eich bod chi wedi dewis gosod mesurau rheoli ar sefydliadau Cymru yn hytrach na gweithio gyda Llywodraeth Cymru i sicrhau ateb sy’n cyd-fynd â datganoli.
“I am deeply concerned that you have chosen to place a control on Welsh institutions rather than work with the Welsh Government to achieve a solution that is compatible with devolution.