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U.S. Representatives Debbie Dingell (D-MI-06) and Rob Wittman (R-VA-01) introduced the Earth Mapping Resources Initiative Reauthorization Act of 2026, which will reauthorize the Earth Mapping Resources Initiative (MRI) program that identifies, maps, and studies domestic minerals, geothermal resources, groundwater, and geologic hazards. 

The legislation supports continued geologic mapping and data collection to better understand the nation’s natural resources. It also includes new language to advance the study and mapping of geologic hydrogen, an emerging domestic energy resource that has drawn growing interest in Michigan and across the country. 

"If we’re serious about strengthening American manufacturing and securing our critical mineral supply chains, we need to understand what resources we have here at home. This program gives us the data we need to make smart, informed decisions and build a stronger future for American workers," said Congresswoman Dingell.

Earlier this year, Governor Gretchen Whitmer established the Michigan Geologic Hydrogen Exploration and Preparedness Initiative to coordinate statewide planning, research, infrastructure assessment, and environmental evaluation related to geologic hydrogen exploration and development.

Established in 2019, Earth MRI focuses on enhancing our understanding of the geologic features of the United States. The initiative seeks to complete comprehensive mapping of domestic minerals by 2031.

“Before we can begin to develop our domestic resources, we must first identify, map, and study our mineral supply — which is why I’m supportive of Earth MRI and the ongoing domestic mapping efforts at the Department of Interior,” said Congressman Wittman. “Geological mapping produces economic returns many times greater than its cost, increases exploration activities, and strengthens domestic critical mineral supply chains, strengthening our economy and making the U.S. less dependent on foreign adversaries. I am proud to have introduced this legislation with Congresswoman Dingell.”

As Congress and this administration work to strengthen domestic supply chains for critical minerals, reduce dependence on foreign adversaries, and support American manufacturing, Representatives Dingell and Wittman recognize that responsible resource development begins with reliable data.