Given our findings of the significance of municipal audit committees, coupled with recent interest in governmental audit committee requirements (GFOA 2008), we also perform supplemental analysis to explore the impact of audit committee composition. Our results suggest that a completely independent audit committee, defined as one with no members that are full-time employees of the municipality, does not elicit improvements in terms of internal control weaknesses over those found for committees with at least one insider. This result supports assertions in Klein (1998) that insiders provide valuable information. We find similar results regarding audit committee financial expertise. More specifically, municipalities with an audit committee having at least one financial expert, defined as an individual with specific knowledge regarding governmental financial reporting, do not show stronger associations between audit committees and internal control quality beyond what is found for audit committees without a financial expert. However, we do find evidence that audit committees containing an insider with financial expertise are less likely to have internal control problems than audit committees with insiders lacking financial expertise, possibly suggesting that access to a financial expert is a motivation for maintaining a non-independent audit committee.