Representative Mullin serves on the following House Committees and Caucuses in the 118th Congress:

Committees

House Committee on Natural Resources 

Subcommittee on Energy and Mineral Resources

Subcommittee on Water, Wildlife, and Fisheries

House Committee on Science, Space, and Technology

Subcommittee on Research and Technology

Subcommittee on Investigations and Oversight 

Caucuses

• America250 Congressional Caucus
• American Canadian Economy and Security (ACES) Caucus
• Artificial Intelligence Caucus
• Bipartisan Climate Solutions Caucus
• Black Maternal Health Caucus
• Child Labor Prevention Task Force
• Climate Solutions Caucus
• Colorectal Cancer Caucus
• Congressional Armenian Caucus
• Congressional Asian Pacific American Caucus (CAPAC)
• Congressional Biomedical Research Caucus
• Congressional Bipartisan Affordable Child Care Caucus
• Congressional Bipartisan Oceans Caucus
• Congressional Critical Materials Caucus
• Congressional Dads Caucus
• Congressional Deaf Caucus
• Congressional Deafblind Caucus
• Congressional Diabetes Caucus
• Congressional ERA Caucus
• Congressional Freethought Caucus
• Congressional Friends of Ireland Caucus
• Congressional Gun Violence Prevention Task Force
• Congressional Labor Caucus
• Congressional LGBTQI+ Equality Caucus
• Congressional Medicare for All Caucus
• Congressional Native American Caucus
• Congressional Neuroscience Caucus
• Congressional NextGen 9-1-1 Caucus
• Congressional Pre-K and Child Care Caucus
• Congressional Public Broadcasting Caucus
• Congressional Quiet Skies Caucus
• Congressional Renters Caucus
• Congressional Service Organization Caucus
• Congressional Social Work Caucus
• Congressional STEM Education Caucus
• Congressional Voting Rights Caucus
• Congressional Women in STEM Caucus
• Creative Rights Caucus (CRC)
• Democracy Reform Task Force
• Disaster Equity and Building Resistance Caucus
• Endangered Species Act Caucus
• Fix Congress Caucus
• Flood Resilience Caucus
• Fusion Energy Caucus
• Future of Transportation Caucus
• Hearing Health Caucus
• Hepatitis Caucus
• Hindu, Buddhist, Sikh, and Jain American Congressional Caucus
• House Bipartisan Task Force for Combatting Antisemitism
• House Diabetes Caucus
• Hydrocephalus Caucus
• Majority Leader Taskforce on Poverty and Opportunity
• Personalized Medicine Caucus
• Planetary Science Caucus
• Popular Arts Caucus
• Pro-Choice Caucus (PCC)
• Protect Social Security Caucus
• Rare Diseases Congressional Caucus
• Small Brewers Caucus
• State and Local Tax Deduction (SALT) Caucus
• Stop Project 2025 Task Force
• Sustainable Aviation Caucus
• Sustainable Energy & Environment Coalition (SEEC)
• Technology Access and Social Media Caucus
• Tom Lantos Human Rights Commission
• Travel and Tourism Caucus
• TRIO Caucus
• U.S. People Living with HIV Caucus (HIV Caucus)
• U.S.-Japan Caucus
• U.S.-Philippines Friendship Caucus