Committee on House Administration maintains a list of official registered “Congressional Member Organizations,” more regularly known as caucuses. A caucus is a group of members of the House of Representatives who share some commonality, whether it be personal (ex. the Congressional Hispanic Caucus), related to a district (ex. the Congressional Rural Caucus) or reflective of a representative’s substantive interest (ex. the Congressional Progressive Caucus, the African Great Lakes Caucus). Members form caucuses to organize themselves, to build social ties, to coordinate and promote legislative agendas, and perhaps sometimes to look good to individual or corporate constituents.

A curious feature of caucuses in the House of Representatives is their varying degree of transparency. Some caucuses, such as the Congressional Progressive Caucus and the LGBT Equality Caucus feature member lists, portraits, news releases and details on legislative agendas. Other caucuses, like the Congressional Caucus on Women’s Issues are referred to indirectly through occasional news reports but appear to have no organized public presence. Yet other caucses, such as the African Great Lakes Caucus, are completely invisible except for the staff contacts referred to in the CHA caucus list.

Congressional caucuses are organizations for members of Congress, but they are also valuable indicators of congressional coalitions for the public at large. As an effort at increasing the transparency of these caucuses, I’ve put together the following list of caucus websites where available, and of the lack of caucus websites, too.

African Great Lakes Caucus: no website

Americans Abroad Caucus: no caucus website; list of members here

Bicameral Congressional Caucus on Parkinson’s Disease: no caucus website; list of members here

Biomedical Research Caucus: no dedicated caucus website; secondary website managed by the Coalition for the Life Sciences; list of members here

Bi‐Partisan Coalition for Combating Anti‐Semitism: no caucus website, no list of members available

Bi‐Partisan Congressional Pro‐Life Caucus: no caucus website, no list of members available

Bi‐Partisan Privacy Caucus: no caucus website, no list of members available

BiPartisan, BiCameral Congressional Task Force on Alzheimer’s Disease: no caucus website, no list of members available since 2007

Building a Better America Caucus: no caucus website, no list of members available

California Democratic Congressional Delegation: caucus website with list of members

Caucus for Congressional World Bank Dialogue: no caucus website, no list of members available

Caucus on International Religious Freedom: no caucus website, no list of members available

Children’s Environmental Health Caucus: no caucus website, no list of members available

Coalition on Autism Research and Education: no caucus website, no list of members available

Community College Caucus: no caucus website; list of members here

Congressional 21st Century Health Care Caucus: no caucus website, no list of members available

Congressional Animal Protection Caucus: no caucus website, no list of members available

Congressional Arts Caucus: no dedicated caucus website; secondary website managed by the Arts Action Fund; no list of members available

Congressional Bike Caucus: website with list of members

Congressional Black Caucus: website; list of members

Congressional Boating Caucus: no dedicated caucus website; secondary website managed by the American Boating Congress, containing list of members

Congressional Caribbean Caucus: no website, no list of members

Congressional Caucus for Women’s Issues: no website, no list of members

Congressional Caucus of the Netherlands: no website, no list of members

Congressional Caucus on Addiction, Recovery and Treatment: no website, no list of members

Congressional Caucus on Bosnia: no dedicated caucus website: secondary website managed by Bosniak American Advisory Council containing a list of members.

Congressional Caucus on Bulgaria: no website, no list of members

Congressional Caucus on Central Asia: no website, no list of members

Congressional Caucus on Green Jobs: no website, no list of members

Congressional Caucus on Human Trafficking: no website, no list of members

Congressional Caucus on India and Indian Americans: no dedicated caucus website: secondary website managed by US-India Friendship, with no current list of members

Congressional Caucus on Indonesia: no website, no list of members

Congressional Caucus on Infant Health and Safety: no website, no list of members

Congressional Caucus on Intellectual Property Promotion and Piracy Prevention: no website, no list of members

Congressional Caucus on the Judicial Branch: website; list of members

Congressional Caucus on Tibet: no website, no list of members

Congressional Caucus on Trade: no website, no list of members

Congressional Caucus on Unmanned Aerial Vehicles (UAVs): no website, no list of members

Congressional Caucus on US-Turkey Relations and Turkish Americans: no website; list of members at Turkish Coalition of America

Congressional Caucus on Vietnam: no website, no list of members

Congressional Caucus to Fight and Control Methamphetamine: website; list of members

Congressional Community Pharmacy Coalition: no dedicated caucus website; list of members at the National Community Pharmacists Association.

Congressional Correctional Officers Caucus: no website, no list of members

Congressional Cybersecurity Caucus: no website, no list of members

Congressional Cystic Fibrosis Caucus: no dedicated caucus website; secondary website maintained by the Cystic Fibrosis Foundation with list of members

Congressional Diabetes Caucus: website; list of members

Congressional Down Syndrome Caucus: website; no list of members

Congressional Entertainment Industries Caucus: website; list of members

Congressional Ethiopia and Ethiopian American Caucus: website; list of members

Congressional Everglades Caucus: no website, no list of members

Congressional Farmer Cooperative Caucus: no dedicated caucus website; secondary website with list of members maintained by the National Council of Farmer Cooperatives

Congressional Fitness Caucus: no website, no list of members

Congressional Friends of Canada Caucus: no website, no list of members

Congressional Friends of Denmark Caucus: no website, no list of members

Congressional Friends of Jordan Caucus: no website, no list of members

Congressional Friends of Spain Caucus: no website, no list of members

Congressional Gaming Caucus: no website, no list of members

Congressional Georgia Caucus: no website, no list of members

Congressional Global Health Caucus: website; no list of members

Congressional Hazards Caucus: website; list of members

Congressional Health Care Reform Caucus: no website, no list of members

Congressional Heart and Stroke Coalition: no dedicated website; secondary website maintained by the American Heart Association with a list of members

Congressional High Technology Caucus: website with integrated list of members

Congressional High-Performance Buildings Caucus: no dedicated website; secondary website maintained by various corporations associated with the building industry, with a list of members

Congressional Hispanic Caucus: website with integrated list of members

Congressional Horse Caucus: no website, no list of members

Congressional House Aerospace Caucus: no website, no list of members

Congressional Humanities Caucus: no website; list of members

Congressional I‐73/74 Corridor Caucus: no website, no list of members

Congressional International Anti-Piracy Caucus: website; list of members

Congressional Internet Caucus: no dedicated website; secondary website maintained by an alliance of telecommunications and large internet corporations, with a member list

Congressional Kidney Caucus: website; list of members

Congressional Labor and Working Families Caucus: website with integrated list of members

Congressional Lesbian, Gay, Bisexual, and Transgender (LGBT) Equality Caucus: website; list of members

Congressional Library of Congress Caucus: no website, no list of members

Congressional Mental Health Caucus: website; list of members

Congressional Military Industrial Facilities Caucus: no website, no list of members

Congressional Multiple Sclerosis Caucus: no dedicated website; secondary website at the National MS Society with no list of members

Congressional Nanotechnology Caucus: no website, no list of members

Congressional Oral Health Caucus: no dedicated website; secondary website at the Friends of the National Institute of Dental & Craniofacial Research, with a list of members included

Congressional Osteoporosis Caucus: no website, no list of members

Congressional Pakistan Caucus: no dedicated website; secondary website at the Pakistani American Leadership Center, with a list of members included

Congressional Prayer Caucus: website; list of members

Congressional Prevention Caucus: no dedicated website; secondary website at Partnership for Prevention; list of members

Congressional Progressive Caucus: website; list of members

Congressional Research and Development Caucus: no dedicated website; secondary website by a consortium of scientific research organizations; list of members

Congressional Rural Caucus: no website, no list of members

Congressional Rural Housing Caucus: website; list of members

Congressional Serbia Caucus: no dedicated website; secondary website by Serbian Unity Congress with a list of members

Congressional Shellfish Caucus: no website, no list of members

Congressional Shipbuilding Caucus: website; list of members

Congressional Songwriters Caucus: no dedicated website; secondary website by Nashville Songwriters Association International; no list of members

Congressional Sportsmen’s Caucus: no dedicated website; secondary website by Congressional Sportsmen Foundation with list of members

Congressional Steel Caucus: no website, no list of members

Congressional Stop DUI Caucus: no website, no list of members

Congressional Study Group on Public Health: no website, no list of members

Congressional Submarine Caucus: no website, no list of members

Congressional Trails Caucus: no dedicated website; secondary website maintained by the American Hiking Society with a list of members

Congressional Travel & Tourism Caucus: website; list of members

Congressional Ukrainian Caucus: no website, no list of members

Congressional Victim’s Rights Caucus: website; list of members

Congressional Vision Caucus: website; list of members

Congressional Western Caucus: no website, no list of members

Congressional Wireless Caucus: no website, no list of members

Democratic Israel Working Group: no website, no list of members

Diversity and Innovation Caucus: no website, no list of members

E-911 Caucus: no website, no list of members

Electronic Warfare Working Group: website; list of members

Financial and Economic Literacy Caucus: no website, no list of members

Fragile X Caucus: no website, no list of members

Friends of Job Corps Congressional Caucus: no dedicated web site; secondary website by National Job Corps Association with list of members

Friends of Kazakhstan Caucus: no website, no list of members

Friends of New Zealand Caucus: no website, no list of members

Friends of Scotland Caucus: website; no list of members

Friends of Switzerland Caucus: website with list of members

Future of American Media Caucus: website; list of members

Generic Drug Equity Caucus: website without list of members

Goods Movement Caucus: no website, no list of members

GOP Doctors Caucus: no website, no list of members

Green Schools Caucus: no dedicated website; secondary website by the U.S. Green Building Council with list of members

Historic Preservation Caucus: no website, no list of members

House Air Force Caucus: no dedicated website; secondary website by the Air Force Association with list of members

House Army Caucus: no dedicated website; list of members by the Association of the United States Army

House Baltic Caucus: no website, no list of members

House Bangladesh Caucus: no dedicated website; list of members by the US-Bangladesh Advisory Council

House Cancer Caucus: no website, no list of members

House Caucus for Asia-Pacific Economic Cooperation: no website, no list of members

House Hunger Caucus: no website, no list of members

House Impact Aid Coalition: no website, no list of members

House International Conservation Caucus: website; list of members

House Long-Term Care Coalition: no website, no list of members

House Manufacturing Caucus: no website, no list of members

House Naval Mine Warfare Caucus: no website, no list of members

House Mentoring Caucus: no website, no list of members

House Missile Defense Caucus: no website, no list of members

House Nursing Caucus: no dedicated website; secondary website maintained by American Nurses Association with no list of members

House Oceans Caucus: no website, no list of members

House Rural Education Caucus: no website, no list of members

House Rural Health Care Coalition: website; list of members

House Science, Technology, Engineering and Mathematics Education Caucus: no dedicated website; secondary website maintained by STEMed Caucus Steering Committee with list of members

House Small Brewers Caucus LogoHouse Small Brewers Caucus: website; no list of members

Immigration Reform Caucus: website; list of members

Intelligent Transportation Systems Caucus: no website, no list of members

Interstate 49 Caucus: no website, no list of members

Iran Human Rights and Democracy Caucus: no website, no list of members

Iran Working Group: no website, no list of members

Iraqi Women’s Caucus: no website, no list of members

Land Conservation Caucus: no dedicated website; secondary website maintained by the Land Trust Alliance with list of members

Law Enforcement Caucus: website; list of members

Lyme Disease Caucus: no website, no list of members

National Guard and Reserve Components Caucus: website; list of members

National Landscape Conservation System Caucus: no website, no list of members

National Parks Caucus: website with list of members

Northeast Midwest Congressional Coalition: no dedicated website; secondary website maintained by the Northeast Midwest Institute with a list of members

Nuclear Issues Working Group: no website, no list of members

Passenger Rail Caucus: no website, no list of members

Populist Caucus: website with list of members

Property Rights Action Caucus: website without a list of members

Public Broadcasting Caucus: website without a list of members

Religious Minorities in the Middle East Caucus: no website, no list of members

Republican Study Committee: website; list of members

Second Amendment Task Force: website with list of members

Smart Contracting Caucus: no website, no list of members

Spina Bifida Caucus: no website; list of members

Sudan Caucus: no website, no list of members

Sustainable Energy and Environment Coalition: website with list of members

Task Force on Terrorism & Proliferation Financing: no website, no list of members

Textile Caucus: no website, no list of members

U.S.-China Working Group: website with list of members

U.S.-Mongolia Friendship Caucus: no dedicated website; secondary website maintained by the Mongolian Embassy, with an attached list of members

U.S.-Philippines Friendship Caucus: no website, no list of members

Unexploded Ordinance Caucus: no website, no list of members

Water Caucus: no website, no list of members

World Economic Forum Caucus: no website, no list of members

This work is the result of my best-faith effort; surely, given the number of pieces of information involved and the passage of time, there will be inaccuracies and necessary updates. If you know of a congressional caucus or caucus website that is not featured here, please leave a note in the comments section so that we can have as complete as possible a set of links for the 111th Congress. Thanks.

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