How do you deal with a government vigilance officer who himself launders public money and is also your boss?

Please do not answer in a haste saying something like "report him". Because in this case you function in a governmental system, where everybody who is somebody is after abusing whatever little powers they have over public money to their personal benefits. The guy you would have to report to would in all probability be laundering more public funds. To top the situation, your perosnal cirstances wouldn't let you quit the job. Further, you cannot go the press, because the extent of laundering is not sensational enough, even as the collective abuse of financial powers has gigantic adverse effect on the overall performance of the organization.