Rydym wedi gweld hynny gyda'r hyn a ddigwyddodd gyda Roe v Wade, a safodd am bron i 50 mlynedd yn Unol Daleithiau America, gan amddiffyn hawliau atgenhedlu sylfaenol, nes i hynny gael ei ysgubo ymaith gan un penderfyniad.
We've seen that with what's happened with Roe v Wade, which stood for nearly 50 years in the United States of America, protecting fundamental reproductive rights, until that was swept away by a single decision.
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