A 150-day limit on legal challenges to federal permitting decisions anchors the bipartisan permitting bill four US senators introduced Sept. 30, breaking a yearslong Senate impasse over how to speed energy and infrastructure approvals.

The Bipartisan American Affordability and Jobs Act, from Mike Lee (R-Utah), Martin Heinrich (D-NM), Shelley Moore Capito (R-W.Va.), and Sheldon Whitehouse (D-R.I.), would impose the fixed challenge window, give developers greater certainty that permitted projects retain their approvals, and reform Clean Water Act reviews that routinely delay energy infrastructure.

What does the bill change for pipelines?

The measure targets a persistent bottleneck for interstate gas pipelines, which must clear federal environmental reviews and state water-quality certifications — dual tracks that stretch timelines and invite litigation. The bill would establish more predictable environmental reviews and curtail the courtroom exposure that has stalled projects after approval.

It also reaches into power markets. The legislation would expand federal authority over transmission permitting and require data centers to pay the transmission costs they trigger, rather than spreading those costs across other electricity customers.

Where do the remaining disputes sit?

The legislative text reflects months of negotiation, but key issues remain unresolved. Democrats want assurances that wind and solar projects will receive the same streamlining, and they are pressing the Trump administration to clarify what it means by returning wind and solar permitting to "regular order."

The Senate plans to consider amendments before voting. The target is a vote after the Nov. 3 midterm elections. Capito said the permitting bill could be the first vote when the Senate returns.

The House has already passed its own version — the SPEED Act. Both bills would streamline federal permitting and limit litigation, but they diverge on approach:

• The chambers take different routes to reforming the National Environmental Policy Act (NEPA).
• The Senate bill addresses transmission and related issues the House bill does not.
• The House bill specifically excludes offshore wind from its key reforms.

If the Senate passes its bill, the two chambers must reconcile the texts into identical legislation before it can go to the president.

What happens next?

Energy industry groups said the agreement gives lawmakers a meaningful opening to end the congressional stalemate on permitting. The watch items are concrete: the amendment process, the post-election Senate vote timing Capito flagged, and the House-Senate conference that must bridge the NEPA and offshore-wind gaps.

For midstream developers, the practical test will be whether a 150-day challenge window and firm approvals survive amendments and reach the president's desk intact.