Bydd y Bil Plant (Diddymu Amddiffyniad Cosb Resymol) (Cymru) yn ceisio diogelu hawliau plant mewn perthynas â'r ddyletswydd yn erthygl 19 o'r Confensiwn - sef yr hawl i gael eu diogelu rhag trais o bob math. Bydd hynny'n golygu bod plant yng Nghymru yn cael eu diogelu'n gyfreithiol rhag cosb gorfforol yn yr un ffordd ag oedolion.
The Children (Abolition of the Defence of Reasonable Punishment) (Wales) Bill will seek to protect children’s rights in relation to the duty set out in article 19 of the UNCRC – the right to protection from all forms of violence. In doing so, children in Wales will be offered the same legal protection from physical punishment as adults.