Trade (Comprehensive and Progressive Agreement for Trans-Pacific Partnership) Bill [HL]

My Lords, I apologise for intervening, particularly when I have not taken part in these debates before, but I want to ask a question before the Minister leaves the issue of the CRaG provisions, which are very important for some of us who have listened to the debate and have an issue. He said clearly just now that the House of Commons could resolve against ratification, but the noble Lord, Lord Alton, was asking if it could have a vote. How would the House of Commons resolve against ratification without voting on the issue? That is what I struggle to understand.