Brett Guthrie will support the Mammoth Cave National Park Boundary Adjustment Act to expand Mammoth Cave National Park by allowing the park to acquire about 551 acres of land from The Nature Conservancy.

Brett Guthrie · Kentucky · Republican

policy impact 2.00 specificity 1.00 extraction confidence 98%

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Occurrences

Evidence

The homepage's visible latest-news list on June 11, 2026 shows June 9, June 4, June 4, and May 28 items about ICE funding, a data-center investigation, House appropriations, and an Edmonson County water district event; none mention Mammoth Cave or a boundary-adjustment bill.

No visible official House activity on the Mammoth Cave boundary bill in the current latest-news feed.

unresolved unknown

U.S. Congressman Brett Guthrie
primary · model gpt-5.4-mini · confidence 22%

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The official legislation page only shows 'Sponsored Bills' and 'Co-Sponsored Bills' sections with Congress.gov links in the accessible render; no Mammoth Cave bill title is visible.

Accessible official legislation page does not confirm support for the Mammoth Cave bill.

unresolved unknown

Legislation | U.S. Congressman Brett Guthrie
secondary · model gpt-5.4-mini · confidence 18%

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Guthrie was elected to the U.S. House of Representatives in 2008. The biography identifies Kentucky's Second District as including Mammoth Cave National Park.

Official context confirms Guthrie's relevant federal office and district connection to Mammoth Cave, but does not show action on the boundary-adjustment promise.

unresolved unknown

Biography | U.S. Congressman Brett Guthrie
secondary · model gpt-5.5 · confidence 70%

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The accessible official legislation page shows headings for Sponsored Bills and Co-Sponsored Bills with Congress.gov links, but the rendered page does not display a Mammoth Cave National Park Boundary Adjustment Act or related bill title.

Official member legislation page does not confirm Guthrie sponsored or cosponsored the Mammoth Cave boundary bill.

unresolved unknown

Legislation | U.S. Congressman Brett Guthrie
secondary · model gpt-5.5 · confidence 34%

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NPS lists Mammoth Cave National Park as authorized by Congress on May 25, 1926, officially established by Congress on July 1, 1941, and currently totaling 52,830 acres.

Official NPS statistics confirm current park acreage and congressional establishment history, but do not connect Guthrie to a 551-acre Nature Conservancy acquisition bill.

unresolved unknown

Park Statistics - Mammoth Cave National Park (U.S. National Park Service)
secondary · model gpt-5.5 · confidence 45%

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NPS says Mammoth Cave National Park was established on July 1, 1941 to preserve cave systems, the Green and Nolin river valleys, and south-central Kentucky hill country.

Official NPS background verifies the park's status and purpose but provides no evidence that Guthrie supported the specific boundary-adjustment act.

unresolved unknown

Frequently Asked Questions - Mammoth Cave National Park (U.S. National Park Service)
secondary · model gpt-5.5 · confidence 38%

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The NPS release says Mammoth Cave became officially six miles longer because new cave passages were mapped; it discusses Cave Research Foundation survey work, not a land-boundary expansion or Guthrie action.

A later official Mammoth Cave expansion-related release concerns mapped cave mileage, not the promised 551-acre boundary adjustment, so it does not resolve the claim.

unresolved unknown

Mammoth Cave just got a little more “Mammoth” - Mammoth Cave National Park (U.S. National Park Service)
secondary · model gpt-5.5 · confidence 42%

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Assessments

unresolved unknown

The available evidence confirms Guthrie's relevant federal office and Mammoth Cave's status, but does not verify that he sponsored, cosponsored, voted for, or otherwise materially supported the specific Mammoth Cave National Park Boundary Adjustment Act, nor that the 551-acre Nature Conservancy acquisition/boundary expansion was enacted or completed. Official park statistics and timeline materials do not resolve the specific boundary-adjustment promise. Because the record is insufficient rather than showing a clear failed legislative attempt, the claim remains unresolved.

provider codex_cli · model gpt-5.5 · confidence 43%

unresolved unknown

Available official evidence does not verify that Brett Guthrie sponsored, cosponsored, voted for, or otherwise materially advanced the specific Mammoth Cave National Park Boundary Adjustment Act. The accessible Guthrie House pages provided do not show the bill, and while National Park Service materials show later Mammoth Cave updates and current park information, they do not tie Guthrie to the 551-acre boundary-adjustment measure or confirm that the promised support occurred. Because the record here does not establish either Guthrie's concrete support or enough candidate credit for any later outcome, the promise is best scored as unresolved rather than delivered or never.

provider codex_cli · model gpt-5.4 · confidence 68%