Methane Border Adjustment Mechanism Act

This bill establishes a tax on imported oil and natural gas based on the methane emissions from their production in the exporting country. The tax amount is calculated using the same emissions charges that would apply to U.S. producers under Clean Air Act rules, scaled to the volume of the imported product. It aims to incentivize foreign producers to reduce methane emissions by making high-emission imports more expensive, while giving U.S. producers with lower emissions a competitive advantage. The tax would apply to imports after December 31, 2025, and includes provisions for international cooperation to align methane standards globally.