Senate Rural Education Caucus -- Co-Chair
Creative Communications Council
Farmer Cooperative Caucus
Sugar Caucus
U.S. Congressional Internet Caucus
Senate Air Force Caucus
Missile States Coalition
Senate Cuba Working Group -- Cofounder
U.S.-Russia Legislative Working Group on Nonproliferation -- Founder
National Guard Caucus
C-130 Modernization Caucus
Senate Cultural Caucus
4-H Caucus
Senate Republican Capital Markets Task Force
Border Security and Enforcement First Caucus
Congressional Multiple Sclerosis Caucus
Senate High Tech Task Force
Senate Nanotechnology Caucus
Congressional Caucus on CPAs and Accountants -- Co-Chair (with Sen. Ron Johnson)
Senate Career and Technical Education (CTE) Caucus
Senate 2nd Amendment Caucus
Senate Financial and Economic Literacy Caucus
Senate Western Caucus
Senate Rural Health Caucus
Senate Veterans Jobs Caucus
Senate Impact Air Coalition --Co-Chair
Senate Community College Caucus
Congressional Heart and Stroke Coalition
Congressional Former Mayor Caucus
Congressional Coalition on Adoption
Coalition for Autism Research and Education
Senate Caucus on WMD Terrorism