If it is all right, I am going to make a bit of progress because many Members wish to speak. As I have said, I do not think there is a need for the powers in clause 9 because secondary legislation of a similar type could be included in the withdrawal agreement and implementation Bill. Why the need for such powers? We do not think there is any justification for them. I look forward to hearing the Minister's justification for why the clause needs to stand part of the Bill but, unless amendment 7, tabled by the right hon. and learned Member for Beaconsfield (Mr Grieve), is passed, the Opposition will vote for the clause to be struck from the Bill. If clause 9 remains part of the Bill at the end of the parliamentary process, its constitutional potency and scope must be highly circumscribed. I do not intend to dwell extensively on what limits should be placed on the clause 9 power because, in general, the same arguments apply as those that I set out at length in the Committee's deliberations on clause 7 yesterday. I will say, though, that amendment 27 to clause 9, similar to our amendment 25 to clause 7, would constrain the capacity of the powers in clause 9 to reduce rights or protections. The powers in clause 9 are different from the powers in clause 7 in a particular way: namely, the extraordinarily wide power explicitly provided for by clause 9(2) gives Ministers the power by regulation to modify-a term that clause 14 makes clear covers amendment and repeal-the Bill itself once enacted. As my hon. Friend the Member for Rhondda (Chris Bryant) pointed out on Second Reading, there is no example throughout the history of the 20th century of a Bill that has ever sought to do that-not in time of war and not in time of civil emergency. In fact-this is a point that my hon. Friend continues to make, and should-every single emergency powers Act has specified that there should not be a power in such legislation for Ministers to alter primary legislation. We do not believe the power is justified, and amendment 30 would limit the potency of the delegated powers in clause 9 by preventing them from being used to amend or repeal the Act itself. Let me turn briefly to the purpose, scope and limits of clause 17, which gives powers to Ministers to make any consequential provisions that they consider appropriate in consequence of the Act and to make any transitional provisions that might be needed as a result of the Bill coming into force. In contrast to our position on clause 9, we acknowledge that there is an established precedent with regard to consequential and transitional provisions, so we will not be voting against clause 17 standing part of the Bill, but it must be circumscribed. A clause as widely drawn as clause 17-it is arguably the most widely drawn of all-set in the context of a Bill of such constitutional and legal significance that it covers almost every element of the UK's withdrawal from the EU and, it could be argued, nearly every facet of our national life, means that the power to make consequential provisions under clause 17 is not as tightly limited as it might be in other pieces of legislation. As such, it inevitably throws up the possibility that the powers in subsections (1), (2) and (3) of clause 17 could be used to make changes to vast swathes of secondary and primary legislation, including legislation in this Session up to May 2019. When he responds, the Minister will no doubt cite other statutes that provide for not dissimilar powers, but having looked closely at a fair number of them, I am not convinced that any are so widely drawn as this one, and none are contained in legislation as constitutionally significant as this Bill. The Hansard Society was right to refer to clause 17 as a “legislative blank chequeâ€ for the Government, and the power must be restricted. Amendment 29 would achieve that aim by removing subsections (1), (2) and (3) of clause 17. If the Government believe that that is the wrong way to restrict the sweeping powers in the clause, they can of course come forward with their own suggestions, but the principle of circumscribing the powers in the clause must be accepted.