That is the sort of dilemma Sir William and his commissioners will have to resolve in a world where many politicians believe there is no answer to the West Lothian question.

BBC: Another day, another commission on devolution

Its job was to try to find an answer to the West Lothian question, the Welsh version of which asks if it is fair for Welsh MPs to continue to vote on issues such as health and education in England when English MPs have no say on those issues in Wales.

BBC: Commission tries to answer the West Lothian question

The trouble with the West Lothian question, like many good questions, is that it has no good answer.

ECONOMIST: Bagehot