From the Congressional Glossary – Including Legislative and Budget Terms
Ex Officio


Literally, by virtue of one’s office. The term refers to the practice under Senate rules that allows the chairman and ranking minority member of a committee to participate in any of the subcommittees of that committee, but generally not to vote.
See Senate Rule XXV, paragraph 4b)(3): “(3) Notwithstanding subparagraphs (1) and (2), a Senator serving as chairman or ranking minority member of a standing, select, or special committee of the Senate or joint committee of the Congress may serve ex officio, without vote, as a member of any subcommittee of such committee or joint committee.”
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More
- “Assignments to Senate Subcommittees,” CRS Report 98-635 (3-page PDF
)
- “Subcommittees in the House of Representatives,” CRS Report 98-544 (4-page PDF
)
- “Committee Numbers, Sizes, Assignments, and Staff: Selected Historical Data,” CRS Report 96-109 (33-page PDF
)
- “House Rules Affecting Committees,” CRS Report 97-357 (35-page PDF
)
- “Appropriations Subcommittee Structure: History of Changes from 1920-2017,” CRS Report RL31572 (19-page PDF
)
- “Senate Committee Expenditures Resolutions, 110th Congress, and Funding Authorizations, 104th-110th Congresses,” CRS Report RL33905 (23-page PDF
)
- “House Committee Chairs: Considerations, Decisions, and Actions as One Congress Ends and a New Congress Begins,” CRS Report RL34679 (34-page PDF
)
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