I suppose it would be churlish for you to mention in the letter that it was people like Mr. Greene who, because of their dark fantasies about what they thought EU might impose on Ireland, actually made abortion legal in certain circumstances (in principle if not in practice)? The fact that they continues to pursue this line of argument, given the damage they have already done to their own declared aims as a result, demonstrates a remarkable brass neck. The words "hole" and "stop digging" come to mind. I guess they are trying to distract from their own culpability in the matter.

Regarding the letter, why not simply quote the section as you do above and merely close with your challenge: "Perhaps Mr. Greene would be so good as to point out which sections he objects to". That would also probably not get published, but the wording of the text is so clear and simple that it could definitely do with more exposure.