It is a great pleasure to follow the right hon. Member for Normanton, Pontefract and Castleford (Yvette Cooper) in this debate, particularly as the matters on which I wish to touch very much concern her amendment and some of the others we have had. I hope that the House will forgive me if I start by dealing briefly with the opening remarks of the right hon. Member for Birkenhead (Frank Field). I am sorry he is not in his place, but I hope that he will forgive me if I say that the words he articulated were ones that I could fully understand and appreciate-heaven knows I have heard them often enough from constituents and from right-thinking people who want the best for our country-but that contained simplicities. Those simplicities simply do not match the problems this House faces in disentangling us from our relationship with the European Union. This issue has bedevilled the entire debate on Brexit and remain, and it is one reason why we find ourselves where we are today. I happen to believe that what we did last year was a great and historic error. I cannot help it, and nothing that has happened since is going to alter my view. I recognise my responsibility as a Member of Parliament to try to give effect to what the public asked for in their response to that referendum. But in doing so, I am certainly not willing to suspend my own judgment, particularly when I have to witness what I see as an extraordinarily painful process of national self-mutilation, which I am required to facilitate. I cannot escape that; that is what I feel, and I am not going to abandon it because I am ordered to do so by anybody else. With that in mind, I have to say what the right hon. Gentleman is asking for is the desire perhaps of many people in this country, which is to go to bed at night and wake up to find that the whole thing is over and done with. Unfortunately, it is not going to be over and done with for a very long time. The problem we have in this Bill, and on which we have to focus, is how we try to take this risky, dangerous-for our economy, our national security and our national wellbeing-and difficult process to a reasonable outcome. That is the challenge we have got. In doing that, Parliament cannot simply abdicate its responsibility to the Executive. Of course the Executive have to get on with the business of the complex negotiations, but Parliament is entitled to take a check on this at every conceivable stage. I have to say to my colleagues on the Treasury Bench that the problem is that as the difficulties have piled up-in my view, they were inevitable, predictable and predicted-the tendency has been for everybody to get more and more brittle, more and more unwilling to listen, and more and more persuaded that every suggestion that is being made is in some way a form of treason. I have to say, with the deepest regret, that this culminated last Friday with a mad amendment, which I shall come back to in a moment. It was tabled, I believe, without any collective decision making in government at all and it was accompanied by bloodcurdling threats that anybody who might stand in its way was in some way betraying the country's destiny and mission. I am afraid that I am just not prepared to go along with that.