Well, they are considerable difficulties. The point I would make, as I mentioned, is it wasn't until after the 2003 plot in which a number of individuals.... The convicted ring leader was an Algerian who was found to be living in the country illegally. He had an asylum application rejected and then they lost track of him.
A subsequent investigation that was prompted by that case, as I said, revealed that for every ten Algerians specifically who were rejected asylum, nine of them stayed in the country and never left. The fact that it took that plot being uncovered, investigated, and prosecuted before that fact was acknowledged I think is dangerous. I don't think you can afford to wait.
In the process, I understand that the structural impediments to effectively deporting people who are due to be deported are serious. That being said, throughout that process there has to be a level of accountability for those individuals.