Amends the Internal Revenue Code to treat a bond issued for a specified purpose as a tax credit Build America Bond. Defines "specified purpose" to mean providing a facility (including any land, building, or other property functionally related and subordinate to such facility) that is located within 2,000 feet of an enclosed convention center facility that is more than 150,000 square feet and is owned by or on behalf of a governmental unit having a population (determined by using 2000 census data) of not more than 250,000. Limits to $250 million the amount of bonds that may be issued for such purpose.