This bill proposes to amend the Internal Revenue Code of 1986 to ensure that bonds used to finance professional stadiums are no longer treated as tax-exempt. It specifically adds a new category, "professional stadium bond," to the types of bonds that are ineligible for tax-exempt status under Section 103(b) of the Code. A professional stadium bond is defined as any bond whose proceeds finance or refinance capital expenditures for a facility or its appurtenant real property, which is used as a stadium or arena for professional sports exhibitions, games, or training for at least five days during any calendar year. These amendments will apply to all bonds issued after the date of the Act's enactment, thereby ending federal tax subsidies for new professional sports facilities.