← Back to Bills
S 1516119th CongressIntroducedSenate

Cahokia Mounds Mississippian Culture Study Act

Policy Area: Public Lands and Natural Resources
View on Congress.gov
Origin Chamber
Senate
Last Updated
Jul 25, 2026
Latest Action Date
Jul 23, 2026

Latest Action

Placed on Senate Legislative Calendar under General Orders. Calendar No. 478.

Official Summary

Cahokia Mounds Mississippian Culture Study Act This bill directs the Department of the Interior to conduct a special resource study of an area made up of (1) Cahokia Mounds State Historic Site in Collinsville, IL; (2) the Emerald Mounds in St. Clair County, Illinois; and (3) the Pulcher Mounds in Monroe and St. Clair Counties, Illinois. (The National Park Service uses special resource studies when determining whether to designate sites as National Historical Sites.) The study must evaluate the national significance of the study area;determine the suitability and feasibility of designating the study area as a unit of the National Park System;consider other alternatives for preservation, protection, and interpretation of the study area by other governmental entities or nonprofit organizations; andidentify cost estimates for any federal acquisition, development, interpretation, operation, and maintenance associated with such alternatives.Interior must report on the results of the study and make recommendations to specified congressional committees.

GovScope Watchdog™

AI Government Intelligence™
Executive Summary

The Cahokia Mounds Mississippian Culture Study Act directs the Department of the Interior to conduct a special resource study of three archaeological sites in Illinois: Cahokia Mounds State Historic Site, Emerald Mounds, and Pulcher Mounds. The study will assess the national significance of these sites, evaluate the feasibility and suitability of designating them as a unit of the National Park System, explore alternative preservation and protection options by other entities, and estimate costs associated with federal acquisition, development, operation, and maintenance. The Department of the Interior must report the study findings and recommendations to designated congressional committees.

Bottom Line

This bill mandates a federal study to evaluate the potential for National Park System designation or other preservation options for significant archaeological sites in Illinois, with a required report to Congress.

Policy Risk Level
🟢 Low
Neutral Risk Assessment
Key Points
  • Requires the Department of the Interior to conduct a special resource study of three specific archaeological sites in Illinois.
  • The study must evaluate national significance, suitability, feasibility, alternative preservation methods, and cost estimates.
  • Findings and recommendations must be reported to specified congressional committees.
Who Benefits?

['Department of the Interior and National Park Service through expanded study and potential management roles', 'Local and state governments in Illinois involved with the historic sites', 'Nonprofit organizations interested in preservation and interpretation of cultural heritage', 'General public and visitors interested in Mississippian culture and archaeological history']

Potential Concerns

['Costs associated with conducting the study and potential future federal acquisition and maintenance', 'Implementation timeline and resource allocation within the Department of the Interior', 'Determining the feasibility and suitability may lead to complex decisions about federal versus non-federal management', 'Oversight of the study process and ensuring comprehensive evaluation']

Political Context

The bill is part of the 119th Congress and currently in process, having been placed on the Senate Legislative Calendar. It addresses preservation of cultural and historic sites through federal evaluation, a common approach for potential National Park System designations. The bill reflects ongoing congressional interest in protecting significant archaeological and historic resources.

Hidden Impact Review

Hidden impact flags detected: 2

GovScope reviewed 2 policy-risk categories. Hover for a quick definition. Click detected flags for bill-specific details.

2 Detected
Detected Flags
Indirect Effects

['Potential increased tourism and economic activity in Illinois if sites are designated or better preserved.', 'Enhanced collaboration opportunities between federal, state, and nonprofit entities for cultural resource management.', 'Possible shifts in local land use and management practices depending on study outcomes and future designations.']

GovScope Watchdog Notes

The bill mandates a formal study with reporting requirements to Congress, supporting transparency in evaluating federal involvement in cultural site preservation. However, the absence of full bill text limits detailed analysis of specific procedural or oversight mechanisms. Monitoring the study's scope, cost estimates, and recommendations will be important for assessing future federal commitments and impacts.

Passage Likelihood: UnknownConfidence: 85%Model: gpt-4.1-mini

GovScope Intelligence Roadmap

Future bill intelligence will connect sponsors, committee referrals, related votes, campaign finance, disclosures, and stock trades into one legislative intelligence view.

Enterprise Ready