I am grateful to my hon. Friend. Of course, when he was serving his country in Northern Ireland, we had to have controls on the movement of people because we were facing a serious terrorist threat. Nobody is suggesting controls on the movement of people now. There is no suggestion that we are going to need any measures of that kind. We are talking about the movement of goods.
I do not want to detain the House any longer because a lot of Members want to speak. As I said, the problem is that the backstop is in the agreement and the agreement cannot be changed once it is passed, because it is a legally binding undertaking. If only the Government could find a way of taking the backstop out and putting it into those issues that we will try to resolve over the course of the next two years, I would be happy—well, not happy, but willing perhaps—to support the motion on Tuesday. But unless that can be done, I am afraid that I cannot.