MPs expenses: Part 127 ...

The papers are reporting that files have now been handed over to the CPS to consider whether criminal charges should be brought against four members of Parliament. I hope if the evidence is there, ie, if there's a realistic prospect of a conviction, prosecutions are brought. It's difficult to imagine any circumstances in which it would not be in the public interest to prosecute MPs caught fiddling expenses. Joe Public wouldn't receive preferential treatment - why should MPs?