S. 1870 (119th)Bill Overview

Rim of the Valley Corridor Preservation Act

Public Lands and Natural Resources|CaliforniaGeography and mapping
Cosponsors
Support
Democratic
Introduced
May 22, 2025
Discussions
Bill Text
Current stageCommittee

Read twice and referred to the Committee on Energy and Natural Resources.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

This bill expands the boundary of the Santa Monica Mountains National Recreation Area to include the Rim of the Valley Unit, incorporates a 2023 boundary map, allows the Secretary of the Interior to acquire land or interests and administer them under existing NPS law, permits minor boundary revisions after notifying congressional committees, and states utilities and water facilities may continue operating but must minimize impacts on park resources.

Why people may split

Tradeoff: conservation benefits versus perceived federal overreach

Watch point

Relative to its intended legislative type, this bill is a straightforward statutory boundary adjustment that is well integrated into the existing National Park Service framework (clear amendment to the U.S. Code, map specifications, and administration under existing law).

This bill expands the boundary of the Santa Monica Mountains National Recreation Area to include the Rim of the Valley Unit, incorporates a 2023 boundary map, allows the Secretary of the Interior to acquire land or interests and administer them under existing NPS law, permits minor boundary revisions after notifying congressional committees, and states utilities and water facilities may continue operating but must minimize impacts on park resources.

Passage40/100

Relatively narrow and administrative, with modest fiscal impact, but possible local opposition and absent funding details reduce certainty.

CredibilityPartially aligned

Relative to its intended legislative type, this bill is a straightforward statutory boundary adjustment that is well integrated into the existing National Park Service framework (clear amendment to the U.S. Code, map specifications, and administration under existing law).

Contention65/100

Tradeoff: conservation benefits versus perceived federal overreach

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Federal agenciesLocal governments · Federal agencies

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Potential benefitProtects habitat corridors and biodiversity by formally expanding the recreation area's boundary to include the Rim of…
  • Potential benefitEnhances recreational access and outdoor opportunities across connected open spaces.
  • Federal agenciesEnables coordinated federal management and conservation planning for watersheds and wildlife.
Likely burdened
  • Local governmentsExpands federal jurisdiction which could constrain local land-use decision-making.
  • Federal agenciesCould increase federal acquisition and ongoing management costs for the National Park Service.
  • Potential burdenMay create regulatory uncertainty for private landowners and potential development restrictions.
03 · Why people split

Why the argument around this bill splits.

Tradeoff: conservation benefits versus perceived federal overreach
Progressive90%

Likely supportive; sees the bill as a conservation and public-access win that protects habitat, watershed, and recreation near Los Angeles.

Would want assurances about equitable access, indigenous consultation, and funding for restoration and management.

Leans supportive
Centrist65%

Cautious support if fiscally and administratively responsible.

Values conservation and recreation but wants clarity on costs, acquisition methods, and impacts on utilities, local governments, and private landowners.

Split reaction
Conservative25%

Skeptical or opposed; views expansion as federal encroachment risking private property and local control.

Appreciates clause preserving utility operations but worries about future regulations and costs.

Likely resistant
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood40/100

Relatively narrow and administrative, with modest fiscal impact, but possible local opposition and absent funding details reduce certainty.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • No cost estimate or funding source included
  • Local government and landowner support unknown
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Tradeoff: conservation benefits versus perceived federal overreach

Relatively narrow and administrative, with modest fiscal impact, but possible local opposition and absent funding details reduce certainty.

Unlocked analysis

Relative to its intended legislative type, this bill is a straightforward statutory boundary adjustment that is well integrated into the existing National Park Service framework (clear amendment to the U.S. Code, map sp…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
Open full analysis