The investment seeks as high a level of current interest income exempt from federal income tax as is available from municipal obligations and as is consistent with prudent investment management and preservation of capital. The fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in securities the income from which is exempt from federal income tax, including the federal alternative minimum tax. It will invest primarily in municipal debt obligations that are issued by state and local governments to raise funds for various public purposes such as hospitals, schools, and general capital expenses.