All the pre-briefing about the Queen's Speech suggested that its centrepiece, its pièce de résistance, would be a new immigration bill. Trumpets sounded. The drum roll played. But by the time the Queen had returned to Buckingham Palace and sent the Crown back to the Tower of London, the government confessed that all they had come up with was a set of three measures that they are considering putting into a Bill that will not even be ready for presenting to parliament until the autumn.