- Committee on Energy and Natural Resources (Energy)
Committee's website: http://energy.senate.gov/public/
- Subcommittee on National Parks
- Subcommittee on Public Lands and Forests (Chairman)
- Subcommittee on Water and Power
- Committee on Environment and Public Works (EPW)
Committee's website: http://epw.senate.gov/
- Subcommittee on Clean Air / Nuclear Safety
- Subcommittee on Transportation and Infrastructure
- Subcommittee on Water and Wildlife
- Committee on Indian Affairs
Committee's website: http://indian.senate.gov/ (Chairman)
- Committee on Foreign Relations
Committee's website: http://foreign.senate.gov/
- Subcommittee on African Affairs
- Subcommittee on European Affairs
- Subcommittee on International Development and Foreign Assistance
- Subcommittee on Western Hemisphere and Global Narcotics Affairs