Close the institutional gap: bodies, committees, leadership

The seat data answered 'who represents this place?' but not 'who runs
this institution?' — the Speaker of the House existed only as the rep
for LA-4. This adds the missing axis of institutional power.

New Body entities (233): the U.S. House, U.S. Senate, Executive Office,
49 committees, 181 subcommittees — each with its leadership.

Federal people (532/542) enriched with bioguide IDs, leadership roles,
and committee seats, reconciled from congress-legislators by name.
Mike Johnson is now Speaker of the House, not just LA-4.

Sources ingested directly into the repo (repo-canonical): Atlas
supplied bodies/leadership/committee_memberships via congress-legislators,
committed raw in data/. build.py supersedes convert_officeholders.py and
reads all four inputs in one deterministic pass (byte-identical on rerun).

The 10 unenriched federal records are a finding, not a bug: vacancies,
the President, and ~5 seats where Atlas's roster disagrees with the
authoritative current roster — model-vs-reality discrepancies to surface.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

data/jurisdictions/us/people/chris-van-hollen.md

@@ -7,6 +7,52 @@ party: "D"
 level: "federal"
 branch: "legislative"
 state: "MD"
+committees:
+  - name: "Senate Committee on Appropriations"
+    role: "member"
+    body: "us/bodies/senate/committees/appropriations"
+  - name: "Senate Committee on Appropriations - Commerce, Justice, Science, and Related Agencies"
+    role: "ranking-member"
+    body: "us/bodies/senate/committees/appropriations/subcommittees/commerce-justice-science-and-related-agencies"
+  - name: "Senate Committee on Appropriations - Department of Homeland Security"
+    role: "member"
+    body: "us/bodies/senate/committees/appropriations/subcommittees/department-of-homeland-security"
+  - name: "Senate Committee on Appropriations - Department of Interior, Environment, and Related Agencies"
+    role: "member"
+    body: "us/bodies/senate/committees/appropriations/subcommittees/department-of-interior-environment-and-related-agencies"
+  - name: "Senate Committee on Appropriations - Financial Services and General Government"
+    role: "member"
+    body: "us/bodies/senate/committees/appropriations/subcommittees/financial-services-and-general-government"
+  - name: "Senate Committee on Appropriations - Transportation, Housing and Urban Development, and Related Agencies"
+    role: "member"
+    body: "us/bodies/senate/committees/appropriations/subcommittees/transportation-housing-and-urban-development-and-related-agencies"
+  - name: "Senate Committee on Banking, Housing, and Urban Affairs"
+    role: "member"
+    body: "us/bodies/senate/committees/banking-housing-and-urban-affairs"
+  - name: "Senate Committee on Banking, Housing, and Urban Affairs - Digital Assets"
+    role: "member"
+    body: "us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/digital-assets"
+  - name: "Senate Committee on Banking, Housing, and Urban Affairs - Housing, Transportation, and Community Development"
+    role: "member"
+    body: "us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/housing-transportation-and-community-development"
+  - name: "Senate Committee on Banking, Housing, and Urban Affairs - National Security and International Trade and Finance"
+    role: "member"
+    body: "us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/national-security-and-international-trade-and-finance"
+  - name: "Senate Committee on Foreign Relations"
+    role: "member"
+    body: "us/bodies/senate/committees/foreign-relations"
+  - name: "Senate Committee on Foreign Relations - Africa and Global Health Policy"
+    role: "member"
+    body: "us/bodies/senate/committees/foreign-relations/subcommittees/africa-and-global-health-policy"
+  - name: "Senate Committee on Foreign Relations - East Asia, the Pacific, and International Cybersecurity Policy"
+    role: "member"
+    body: "us/bodies/senate/committees/foreign-relations/subcommittees/east-asia-the-pacific-and-international-cybersecurity-policy"
+  - name: "Senate Committee on Foreign Relations - State Department and USAID Management, International Operations, and Bilateral International Development"
+    role: "ranking-member"
+    body: "us/bodies/senate/committees/foreign-relations/subcommittees/state-department-and-usaid-management-international-operations-and-bilateral-international-development"
+  - name: "Senate Committee on the Budget"
+    role: "member"
+    body: "us/bodies/senate/committees/the-budget"
 tenure:
   start: "2025-01-03"
   current: true
@@ -19,11 +65,14 @@ ids:
   office: "feff96d7-8cbd-47fa-8553-50158df52153"
   tenure: "3abf9e36-337e-4aac-a590-096ed5c57a23"
   jurisdiction: "318476cf-2cb3-41d9-b2cb-82accd9938f0"
+  bioguide: "V000128"
 sources:
   - field: tenure
     source: "Senate.gov XML 2026-06-20"
   - field: jurisdiction
     source: "Derived from governor jurisdiction"
+  - field: roles
+    source: "congress-legislators (unitedstates project)"
 confidence: official
 tags: [officeholder, federal, legislative, md]
 timestamp: "2026-06-20"
@@ -33,9 +82,28 @@ timestamp: "2026-06-20"
 
 Current U.S. Senate - MD (State of Maryland).
 
+## Committees
+
+- [Senate Committee on Appropriations](/us/bodies/senate/committees/appropriations.md)
+- [Senate Committee on Appropriations - Commerce, Justice, Science, and Related Agencies](/us/bodies/senate/committees/appropriations/subcommittees/commerce-justice-science-and-related-agencies.md) — **ranking-member**
+- [Senate Committee on Appropriations - Department of Homeland Security](/us/bodies/senate/committees/appropriations/subcommittees/department-of-homeland-security.md)
+- [Senate Committee on Appropriations - Department of Interior, Environment, and Related Agencies](/us/bodies/senate/committees/appropriations/subcommittees/department-of-interior-environment-and-related-agencies.md)
+- [Senate Committee on Appropriations - Financial Services and General Government](/us/bodies/senate/committees/appropriations/subcommittees/financial-services-and-general-government.md)
+- [Senate Committee on Appropriations - Transportation, Housing and Urban Development, and Related Agencies](/us/bodies/senate/committees/appropriations/subcommittees/transportation-housing-and-urban-development-and-related-agencies.md)
+- [Senate Committee on Banking, Housing, and Urban Affairs](/us/bodies/senate/committees/banking-housing-and-urban-affairs.md)
+- [Senate Committee on Banking, Housing, and Urban Affairs - Digital Assets](/us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/digital-assets.md)
+- [Senate Committee on Banking, Housing, and Urban Affairs - Housing, Transportation, and Community Development](/us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/housing-transportation-and-community-development.md)
+- [Senate Committee on Banking, Housing, and Urban Affairs - National Security and International Trade and Finance](/us/bodies/senate/committees/banking-housing-and-urban-affairs/subcommittees/national-security-and-international-trade-and-finance.md)
+- [Senate Committee on Foreign Relations](/us/bodies/senate/committees/foreign-relations.md)
+- [Senate Committee on Foreign Relations - Africa and Global Health Policy](/us/bodies/senate/committees/foreign-relations/subcommittees/africa-and-global-health-policy.md)
+- [Senate Committee on Foreign Relations - East Asia, the Pacific, and International Cybersecurity Policy](/us/bodies/senate/committees/foreign-relations/subcommittees/east-asia-the-pacific-and-international-cybersecurity-policy.md)
+- [Senate Committee on Foreign Relations - State Department and USAID Management, International Operations, and Bilateral International Development](/us/bodies/senate/committees/foreign-relations/subcommittees/state-department-and-usaid-management-international-operations-and-bilateral-international-development.md) — **ranking-member**
+- [Senate Committee on the Budget](/us/bodies/senate/committees/the-budget.md)
+
 ## Sources
 
 - tenure: Senate.gov XML 2026-06-20
 - jurisdiction: Derived from governor jurisdiction
+- roles: congress-legislators (unitedstates project)
 
 Generated from the Atlas officeholders v2 export (2026-06-20).