 Accordingly, the case study involves at least the appearance of corrupt activity on the part of the senators. Moreover, Thompson claims that such an appearance might be sufficient for institutional corruption in that damage has been done to a political institution by virtue of a diminution in public trust in that institution. Thus the appearance of a conflict of interest undermines public trust which in turn damages the institution. The appearance of a conflict of interest arises when legislators use their office to provide a questionable “service” to a person upon whom they are, or have been, heavily reliant for campaign contributions. Evidently, on Thompson’s account of institutional (as opposed to individual) corruption it is not necessary that the legislators in these kinds of circumstance ought to know that their actions might well have the appearance of a conflict of interest, ought to know that they might have a resulting damaging effect, and ought to know, therefore, that they ought not to have performed those actions. Certainly, the senators in the Keating case ought to have known that they ought not to perform these actions. However, the more general point is that it is not clear that it would be a case of corruption, if it were not the case that the legislators in question ought to have known that they ought not to perform the institutionally damaging actions in question. On the causal account  (section 2.2  above), if legislators or other officials perform institutionally damaging actions that they could not reasonably be expected to know would be institutionally damaging then they have not engaged in corruption but rather incidental institutional damage (and perhaps corrosion if the actions are ongoing).