First of all, our view is that it would be open to the Government to put forward an immigration Bill that did that very simply, but they would need a plan for the new system. No such plan exists; until it does, ending free movement simply cannot be tenable, for the reasons that we have given. We are not saying that it is invalid for the Government to choose to end free movement. We may disagree about precisely what system will replace it or about whether free movement was the best system in the first place, but that is fine. What you cannot do, however, is end free movement overnight, because that will lead to a situation in which between 3 million and 4 million EU citizens were here with no documentation beyond their EU passport, while new EU migrants were coming in with their EU passport plus some other document. We have in-country immigration checks, and people may want to leave and come back, but they will not be able to until they have been registered and a clear new system has been set out. The Government should have put that forward in the Bill.