S. 1516 (119th)Bill Overview

Cahokia Mounds Mississippian Culture Study Act

Public Lands and Natural Resources|Public Lands and Natural Resources
Cosponsors
Support
Democratic
Introduced
Apr 29, 2025
Discussions
Bill Text
Current stageCommittee

Read twice and referred to the Committee on Energy and Natural Resources. (text: CR S2668: 1)

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

This bill directs the Secretary of the Interior to conduct a special resource study of Cahokia Mounds, Emerald Mounds, and Pulcher Mounds in Illinois. The study must evaluate national significance, assess suitability and feasibility for National Park System designation, consider preservation alternatives, consult stakeholders, estimate costs, follow title 54 procedures, and report findings to congressional committees within three years of funding.

Why people may split

Liberals prioritize explicit tribal consultation and implementation funding

Watch point

Relative to its intended legislative type, this bill is a well‑constructed special resource study authorization.

This bill directs the Secretary of the Interior to conduct a special resource study of Cahokia Mounds, Emerald Mounds, and Pulcher Mounds in Illinois.

The study must evaluate national significance, assess suitability and feasibility for National Park System designation, consider preservation alternatives, consult stakeholders, estimate costs, follow title 54 procedures, and report findings to congressional committees within three years of funding.

Passage80/100

Routine National Park Service study bill with low ideological conflict and modest fiscal impact historically has high chance, subject to funding and calendar.

CredibilityAligned

Relative to its intended legislative type, this bill is a well‑constructed special resource study authorization. It clearly defines the study scope and required contents, ties the study to the applicable statute, designates the responsible official, and sets a reporting deadline.

Contention30/100

Liberals prioritize explicit tribal consultation and implementation funding

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Federal agencies · Local governmentsLocal governments · Federal agencies

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

Likely helped
  • Federal agenciesCould lead to stronger federal protection and preservation of important archaeological and cultural resources.
  • Local governmentsMay increase heritage tourism, supporting local hospitality, retail, and construction jobs.
  • Potential benefitWould produce cost estimates and analyses to inform congressional decisions about National Park designation.
Likely burdened
  • Local governmentsCould lead to federal acquisition or oversight reducing local or state control over land use.
  • Federal agenciesMay impose additional regulatory burdens on adjacent landowners if federal designation is pursued.
  • Federal agenciesStudy costs and potential future federal commitments could increase federal expenditures.
03 · Why people split

Why the argument around this bill splits.

Liberals prioritize explicit tribal consultation and implementation funding
Progressive85%

Likely supportive overall as cultural preservation and Indigenous heritage recognition.

Would want explicit tribal consultation, protections, and commitments for long-term funding and interpretation.

Leans supportive
Centrist80%

Generally favorable toward a study to gather facts before action.

Supports careful cost analysis and multi‑stakeholder engagement to avoid unintended federal overreach or fiscal surprises.

Leans supportive
Conservative50%

Cautiously open to a study if narrowly focused, but skeptical that it could be a precursor to federal land acquisition and costly National Park obligations.

Split reaction
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 likelihood80/100

Routine National Park Service study bill with low ideological conflict and modest fiscal impact historically has high chance, subject to funding and calendar.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • Whether Congress will appropriate funds to conduct the study
  • Committee and floor scheduling/prioritization
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

Liberals prioritize explicit tribal consultation and implementation funding

Routine National Park Service study bill with low ideological conflict and modest fiscal impact historically has high chance, subject to fu…

Unlocked analysis

Relative to its intended legislative type, this bill is a well‑constructed special resource study authorization. It clearly defines the study scope and required contents, ties the study to the applicable statute, design…

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