Tar Sands Tax Loophole Elimination Act

This bill amends the tax code to close a loophole that previously allowed certain tar sands oil to be taxed differently than conventional crude oil. It expands the definition of "crude oil" under federal excise tax rules to explicitly include oil derived from tar sands, bitumen, and oil shale. This change directly affects oil producers and refiners handling these specific unconventional oil sources, requiring them to pay the standard crude oil excise tax. The key mechanism is the updated tax code definition, which also grants the Secretary regulatory authority to include other pipeline-transported petroleum products meeting specific environmental risk criteria.