This bill closes a tax loophole by explicitly requiring tar sands and other unconventional oil sources to be taxed as crude oil under federal excise tax law. Currently, products derived from tar sands, bitumen, and oil shale may escape the federal petroleum excise tax through ambiguous regulatory language; this legislation clarifies that these energy sources must be treated the same as traditional crude oil for tax purposes. The bill also grants the Treasury Secretary authority to identify and tax other fuel products transported by pipeline or tanker that pose environmental hazards comparable to crude oil. The measure affects oil companies and refineries that process tar sands and unconventional petroleum products, potentially increasing their federal tax obligations. The changes take effect immediately upon enactment, with no specified funding amount or implementation timeline.