- Potential benefitIncreases protected land, helping conserve cave, karst, and surface ecosystems within the park.
- Potential benefitCould expand recreational and tourism opportunities at Mammoth Cave National Park.
- Potential benefitMay preserve cultural, historic, and scientific resources under National Park Service management.
Mammoth Cave National Park Boundary Adjustment Act of 2025
Referred to the House Committee on Natural Resources.
The bill amends Section 11 of the Mammoth Cave National Park Act to authorize a boundary modification. It inserts an inflation‑adjusted $350,000 figure into that section and authorizes the Secretary of the Interior to acquire roughly 551.14 acres (and interests in land) shown on a May 2025 map for inclusion in Mammoth Cave National Park.
Left emphasizes conservation and public access benefits
Relative to its intended legislative type, this bill is a narrowly scoped substantive policy change that amends an existing park statute to authorize inclusion of a specific parcel into Mammoth Cave National Park.
The bill amends Section 11 of the Mammoth Cave National Park Act to authorize a boundary modification.
It inserts an inflation‑adjusted $350,000 figure into that section and authorizes the Secretary of the Interior to acquire roughly 551.14 acres (and interests in land) shown on a May 2025 map for inclusion in Mammoth Cave National Park.
Content is narrow, low cost, and administratively straightforward—typical of public‑lands bills that often become law, though dependent on committee and floor scheduling.
Relative to its intended legislative type, this bill is a narrowly scoped substantive policy change that amends an existing park statute to authorize inclusion of a specific parcel into Mammoth Cave National Park. It names the implementing official and references a specific map and acreage, but it provides minimal explanatory, procedural, fiscal, and oversight detail.
Left emphasizes conservation and public access benefits
Who stands to gain, and who may push back.
These are examples from the analysis, not a ranked list of the most-affected groups.
- Local governmentsAdds federal land could reduce local property tax base and alter municipal revenues.
- Potential burdenMay restrict private development or resource uses on lands near the new boundary.
- Federal agenciesAcquisitions could require federal spending or appropriations to purchase or manage the land.
Why the argument around this bill splits.
Left emphasizes conservation and public access benefits
Likely broadly supportive: expansion protects habitat, cave resources, and public lands.
Sees park addition as conservation and recreation gain, with modest federal cost.
Generally favorable if costs, acquisition methods, and local impacts are transparent.
Sees conservation and economic benefits but wants fiscal and procedural safeguards.
Skeptical of further federal land expansion and taxpayer costs.
Concerned about property rights, federal overreach, and precedent for additional acquisitions.
The path through Congress.
Reached or meaningfully advanced
Reached or meaningfully advanced
Still ahead
Still ahead
Still ahead
Content is narrow, low cost, and administratively straightforward—typical of public‑lands bills that often become law, though dependent on committee and floor scheduling.
- Whether the land is privately owned and willingness to sell
- Absence of a formal CBO cost estimate in the text
Recent votes on the bill.
No vote history yet
The bill has not accumulated any surfaced votes yet.
Go deeper than the headline read.
Left emphasizes conservation and public access benefits
Content is narrow, low cost, and administratively straightforward—typical of public‑lands bills that often become law, though dependent on…
Relative to its intended legislative type, this bill is a narrowly scoped substantive policy change that amends an existing park statute to authorize inclusion of a specific parcel into Mammoth Cave National Park. It na…
Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.