As usual, the Home Secretary is generous in giving way and we appreciate that.
May I take the right hon. Gentleman back to the issue of the common travel area with the Republic of Ireland? He was not as explicit about that as he might have been If the House votes for the Bill, is not it the case that we are heading towards a scenario in which, in 10 years' time or so, there will be three categories of people in the UK? First, citizens of the UK will have to have the identity card. Secondly, people from outside the UK and the Republic of Ireland will have to have a passport to be in the country legally and in practice at that time it may in cases be a biometric passport. Thirdly, citizens of the Republic of Ireland will be able to enter Northern Ireland or the rest of the United Kingdom, live there and do whatever they like with no document at all. Is not that a major hole in the intended comprehensiveness of the Home Secretary's system, and is not it an anomaly and an unfairness that will be difficult for the British people to accept?