My Lords, my noble friend knows only too well that the backstop has been the area that has caused the maximum concern in both Houses. Can the Leader expand somewhat on the point the noble Lord, Lord Lilley, made about what is actually being done to find an alternative to that? Who are the Government consulting on these matters? What resources are being put into examining alternatives? Indeed, are any ideas already being pursued to see what alternatives there are? Because I can assure my noble friend that there are alternatives if they are being sought.