In this study, we investigate whether and to what extent institutional shareholders' political values influence their investees' environmental disclosure and performance. Using employees' political donation data, we construct institutional investors' political ideology score, which higher (lower) value represents a more Republican- (Democratic)-leaning culture. We find that firms led by institutional shareholders with a more Republican-oriented political ideology are less likely to issue environmental reports. Such a negative effect is more pronounced for firms with institutional shareholders with long-term horizons, with high corporate Republican ideology scores, and without an environmental committee. We further find that institutional shareholders' Republican-oriented political values are negatively associated with their investee firms' environmental performance and green innovations. Overall, our results indicate that institutional shareholders' internal political polarization significantly influences corporate environmental disclosure policies.

We examine whether litigation risk is systematically related to corporate tax avoidance. We find that the exogeneous reduction in the threat of securities class action litigation due to the 1999 ruling of the Ninth Circuit Court of Appeals effectively increases corporate tax avoidance, which is consistent with the notion that the threat of shareholder litigation plays a disciplinary role in curbing managerial rent extraction from tax avoidance activities. This finding is robust to alternative model specifications including two placebo tests and propensity score matching. We further find that labor union and alternative external governance mechanisms such as analyst coverage and institutional ownership mitigate this effect. Overall, our paper provides a significant contribution to the understanding of the relation between corporate governance and tax avoidance.