policy_source_title: totals

abs rel
House Committees 72 22.8%
Congressional Record 68 21.5%
Senate Committees 32 10.1%
Government Publishing Office 22 7.0%
Department of Homeland Security 18 5.7%
Hansard UK 16 5.1%
Federal Emergency Management Agency 13 4.1%
UK Parliament Select Committee Publications 7 2.2%
RAND Corporation 6 1.9%
Congressional Research Service 5 1.6%
U.S. Government Accountability Office 5 1.6%
Brookings Institute 4 1.3%
Parliament of Singapore 4 1.3%
United States Census Bureau 4 1.3%
Center for Strategic and International Studies 3 0.9%
The UK Government 3 0.9%
European Parliament Plenary 2 0.6%
Heritage Foundation 2 0.6%
Scottish Parliament Official Reports 2 0.6%
State of California 2 0.6%
State of Hawaii 2 0.6%
State of Texas 2 0.6%
Belgian Chamber of Representatives 1 0.3%
C4ADS 1 0.3%
Center for International Policy 1 0.3%
Center for a New American Security 1 0.3%
City of Austin 1 0.3%
Department of Commerce 1 0.3%
District of Columbia 1 0.3%
European Parliament Committees 1 0.3%
French Government Ministries 1 0.3%
GOV.IE 1 0.3%
Hansard Canada 1 0.3%
Hansard Hong Kong 1 0.3%
Hellenic Foundation for European and Foreign Policy 1 0.3%
Institute for Defense Analysis 1 0.3%
Institute for Foreign Policy Analysis 1 0.3%
Justice Department 1 0.3%
Mercatus Center 1 0.3%
Northern Ireland Assembly Official Report 1 0.3%
Publications Office of the European Union 1 0.3%
Rijksoverheid 1 0.3%
The Royal United Services Institute 1 0.3%
United States Studies Centre 1 0.3%

policy_source_title: per year

1998

abs rel
House Committees 1 100.0%

2002

abs rel
House Committees 3 60.0%
Congressional Research Service 1 20.0%
Department of Homeland Security 1 20.0%

2003

abs rel
Congressional Research Service 1 25.0%
House Committees 1 25.0%
RAND Corporation 1 25.0%
Senate Committees 1 25.0%

2004

abs rel
Senate Committees 2 66.7%
House Committees 1 33.3%

2005

abs rel
House Committees 2 40.0%
Institute for Foreign Policy Analysis 1 20.0%
Justice Department 1 20.0%
RAND Corporation 1 20.0%

2006

abs rel
House Committees 3 50.0%
Senate Committees 2 33.3%
Department of Homeland Security 1 16.7%

2007

abs rel
Senate Committees 4 57.1%
United States Census Bureau 2 28.6%
House Committees 1 14.3%

2008

abs rel
House Committees 2 33.3%
Senate Committees 2 33.3%
Department of Homeland Security 1 16.7%
Government Publishing Office 1 16.7%

2009

abs rel
House Committees 4 50.0%
Congressional Research Service 2 25.0%
Department of Homeland Security 2 25.0%

2010

abs rel
Department of Homeland Security 1 25.0%
RAND Corporation 1 25.0%
Senate Committees 1 25.0%
U.S. Government Accountability Office 1 25.0%

2011

abs rel
Senate Committees 2 66.7%
Department of Homeland Security 1 33.3%

2012

abs rel
Federal Emergency Management Agency 4 57.1%
Congressional Research Service 1 14.3%
Department of Homeland Security 1 14.3%
Heritage Foundation 1 14.3%

2013

abs rel
Senate Committees 2 22.2%
State of California 2 22.2%
State of Texas 2 22.2%
Center for International Policy 1 11.1%
Congressional Record 1 11.1%
House Committees 1 11.1%

2014

abs rel
Federal Emergency Management Agency 4 80.0%
U.S. Government Accountability Office 1 20.0%

2015

abs rel
House Committees 5 31.2%
Department of Homeland Security 2 12.5%
Government Publishing Office 2 12.5%
Senate Committees 2 12.5%
Congressional Record 1 6.2%
District of Columbia 1 6.2%
Federal Emergency Management Agency 1 6.2%
U.S. Government Accountability Office 1 6.2%
United States Census Bureau 1 6.2%

2016

abs rel
Congressional Record 4 23.5%
Government Publishing Office 4 23.5%
Senate Committees 2 11.8%
Brookings Institute 1 5.9%
Center for Strategic and International Studies 1 5.9%
Federal Emergency Management Agency 1 5.9%
Hansard UK 1 5.9%
House Committees 1 5.9%
Parliament of Singapore 1 5.9%
U.S. Government Accountability Office 1 5.9%

2017

abs rel
House Committees 3 25.0%
Government Publishing Office 2 16.7%
Congressional Record 1 8.3%
Federal Emergency Management Agency 1 8.3%
Hansard UK 1 8.3%
Publications Office of the European Union 1 8.3%
RAND Corporation 1 8.3%
Senate Committees 1 8.3%
U.S. Government Accountability Office 1 8.3%

2018

abs rel
Congressional Record 10 23.8%
House Committees 9 21.4%
Hansard UK 5 11.9%
Department of Homeland Security 4 9.5%
Government Publishing Office 3 7.1%
The UK Government 2 4.8%
Center for Strategic and International Studies 1 2.4%
Department of Commerce 1 2.4%
Federal Emergency Management Agency 1 2.4%
Institute for Defense Analysis 1 2.4%
Parliament of Singapore 1 2.4%
Scottish Parliament Official Reports 1 2.4%
Senate Committees 1 2.4%
State of Hawaii 1 2.4%
The Royal United Services Institute 1 2.4%

2019

abs rel
Congressional Record 16 34.0%
House Committees 11 23.4%
Government Publishing Office 6 12.8%
Hansard UK 2 4.3%
Belgian Chamber of Representatives 1 2.1%
Brookings Institute 1 2.1%
Center for a New American Security 1 2.1%
City of Austin 1 2.1%
Department of Homeland Security 1 2.1%
Federal Emergency Management Agency 1 2.1%
Hansard Hong Kong 1 2.1%
RAND Corporation 1 2.1%
Senate Committees 1 2.1%
State of Hawaii 1 2.1%
The UK Government 1 2.1%
United States Studies Centre 1 2.1%

2020

abs rel
House Committees 8 27.6%
Congressional Record 6 20.7%
Government Publishing Office 4 13.8%
UK Parliament Select Committee Publications 3 10.3%
Department of Homeland Security 1 3.4%
European Parliament Committees 1 3.4%
GOV.IE 1 3.4%
Mercatus Center 1 3.4%
Parliament of Singapore 1 3.4%
RAND Corporation 1 3.4%
Scottish Parliament Official Reports 1 3.4%
Senate Committees 1 3.4%

2021

abs rel
Congressional Record 22 41.5%
House Committees 9 17.0%
Senate Committees 4 7.5%
Hansard UK 3 5.7%
UK Parliament Select Committee Publications 3 5.7%
Department of Homeland Security 2 3.8%
European Parliament Plenary 2 3.8%
Brookings Institute 1 1.9%
C4ADS 1 1.9%
French Government Ministries 1 1.9%
Hellenic Foundation for European and Foreign Policy 1 1.9%
Heritage Foundation 1 1.9%
Northern Ireland Assembly Official Report 1 1.9%
Parliament of Singapore 1 1.9%
United States Census Bureau 1 1.9%

2022

abs rel
Congressional Record 7 28.0%
House Committees 7 28.0%
Hansard UK 4 16.0%
Senate Committees 2 8.0%
Brookings Institute 1 4.0%
Center for Strategic and International Studies 1 4.0%
Hansard Canada 1 4.0%
Rijksoverheid 1 4.0%
UK Parliament Select Committee Publications 1 4.0%

policy_source_title: missing year

abs rel
Senate Committees 2 100.0%