A new bipartisan Senate bill intended to speed up energy infrastructure has triggered a civil war within the US climate movement. The legislation, known as the Bipartisan American Affordability and Jobs Act, would streamline permitting for power plants, transmission lines, and gas pipelines by weakening parts of the National Environmental Policy Act and other bedrock environmental laws. That trade-off has split activists and lawyers, who want to block fossil fuel projects, from renewable energy companies and policy experts, who argue that building clean energy quickly is more important than preserving every environmental review.

Supporters of the bill say that without faster permitting, the US will struggle to build the solar, wind, and transmission infrastructure needed to replace fossil fuels. They acknowledge that some fossil fuel projects may get built as a side effect, but argue the overall climate benefit is worth it. Opponents counter that weakening environmental protections will harm tribal nations, marginalized communities, and endangered species, and that the bill gives too much power to project developers at the expense of local voices.

The bill is the product of months of negotiation between two Democratic senators—Sheldon Whitehouse of Rhode Island and Martin Heinrich of New Mexico—and two Republicans, Mike Lee of Utah and Shelley Moore Capito of West Virginia. It has not yet cleared committee, and its fate in the House is uncertain. The split reflects a long-running debate over whether the climate movement should prioritize stopping fossil fuels or building clean energy, and the current political moment has only sharpened the disagreement. As one climate expert put it, the challenge is that it is easier to block projects than to build them, but giving every community a veto could stall the transition entirely.