S.3291: A bill to amend the Internal Revenue Code of 1986 to treat certain income and gains relating to fuels as qualifying income for publicly traded partnerships.

Biofuels Pipeline Act of 2008 - Amends the Internal Revenue Code to modify the definition of qualifying income for publicly traded partnerships to include income and gains from the transportation, storage, or marketing of any fuel which meets certain registration requirements for fuels and fuel additives established by the Environmental Protection Agency (EPA) under the Clean Air Act (e.g., biofuels and other renewable fuels).