Tony McNulty is a canny enough politician to know that he has probably already been found guilty in the court of public opinion.
After all, he's stopped claiming thousands of pounds a year for what are - by his own admission - rare overnight visits to his parents' house. What's more he's called for the system of allowances to be scrapped.
The rules that allow MPs - including those who live just a few miles from Westminster - to claim expenses for a second home are far from precise. They are vague enough for Mr McNulty to hope that he cannot be proven to have broken them.
What this case exposes once again is a widespread culture at Westminster that treats allowances as just that - an allowance to be claimed with the help and encouragement of Commons officials to supplement a salary that has been held down by governments of both parties for fear of antagonising the electorate.
That's why the Tories' shadow leader of the Commons Alan Duncan today floated the idea of scrapping the allowances and increasing salaries whilst insisting that this was not party policy.
With years of MPs' detailed expense claims to be published this summer thanks to freedom of information - these allegations won't be the last.