My Lords, some time ago I indicated to the noble and learned Lord, Lord McCluskey, that I support his approach to this clause. It is vitally important to consider the question of whether it is intended that the clause, whatever its terms, should be subject to decision by a court of law. The situation so far as Wales is concerned—and I think it would be true for the Scottish Parliament—is that in
some cases its powers are subject to judicial scrutiny. The Parliament of the United Kingdom is not of that kind. It has never had its principal functions subject to judicial scrutiny. If a term is put into this Bill, which will then become an Act, that determines when the United Kingdom Parliament can act, that will be a complete innovation. It does not matter what the terms are, however precise and well drafted, I cannot see how that could be excluded unless provision is made in the Bill which states that the decision on this point is to be a matter for the United Kingdom Parliament. This I regard as an extremely serious point which the Government have to decide.
It is not a question of agreeing with the Scottish nationalists. The amendment tabled by the noble and learned Lord, Lord Hope, seems to be in accordance with what they would like to see; that is, the furthest stretch of the convention, which is called the Sewel convention for various reasons, amounting to what is really a complete ban. That is what I think the amendment of the noble and learned Lord, Lord Hope, does, but that does not cut out by itself the idea that a court of law could determine whether the United Kingdom Parliament had acted lawfully in making an Act which could affect Scotland. That is why I strongly support Amendment 12 tabled by the noble and learned Lord, Lord McCluskey. That concept must be put into this clause at some point in order that the matter be not justiciable.