This excerpt taken from the PNC 10-K filed Mar 2, 2009.
The US Department of the Treasury has the unilateral ability to change some of the restrictions imposed on us by virtue of our sale of securities to it.
Our agreement with the US Department of the Treasury under which it purchased our securities imposes restrictions on our conduct of our business, including restrictions related to our payment of dividends and repurchase of our stock and related to our executive compensation and governance. The US Department of the Treasury has the right under this agreement to unilaterally amend it to the extent required to comply with any future changes in federal statutes. The Recovery Act amended provisions of EESA relating to compensation and governance as they affect companies such as PNC that have sold securities to the US Department of the Treasury. In some cases, these amendments require action by the US Department of the Treasury to implement them. These amendments could have an adverse impact on the conduct of our business, as could additional amendments in the future that impose further requirements or amend existing requirements.