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/chuck-grassley.md

@@ -7,6 +7,47 @@ party: "R"
 level: "federal"
 branch: "legislative"
 state: "IA"
+leadership:
+  - role: "President Pro Tempore of the Senate"
+    body: "S"
+    since: "2025-01-03"
+committees:
+  - name: "Joint Committee on Taxation"
+    role: "member"
+    body: "us/bodies/joint/committees/taxation"
+  - name: "Senate Committee on Agriculture, Nutrition, and Forestry"
+    role: "member"
+    body: "us/bodies/senate/committees/agriculture-nutrition-and-forestry"
+  - name: "Senate Committee on Agriculture, Nutrition, and Forestry - Commodities, Derivatives, Risk Management, and Trade"
+    role: "member"
+    body: "us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/commodities-derivatives-risk-management-and-trade"
+  - name: "Senate Committee on Agriculture, Nutrition, and Forestry - Food and Nutrition, Specialty Crops, Organics, and Research"
+    role: "member"
+    body: "us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/food-and-nutrition-specialty-crops-organics-and-research"
+  - name: "Senate Committee on Agriculture, Nutrition, and Forestry - Rural Development, Energy, and Credit"
+    role: "member"
+    body: "us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/rural-development-energy-and-credit"
+  - name: "Senate Committee on Finance"
+    role: "member"
+    body: "us/bodies/senate/committees/finance"
+  - name: "Senate Committee on Finance - International Trade, Customs, and Global Competitiveness"
+    role: "member"
+    body: "us/bodies/senate/committees/finance/subcommittees/international-trade-customs-and-global-competitiveness"
+  - name: "Senate Committee on Finance - Social Security, Pensions, and Family Policy"
+    role: "chair"
+    body: "us/bodies/senate/committees/finance/subcommittees/social-security-pensions-and-family-policy"
+  - name: "Senate Committee on Finance - Taxation and IRS Oversight"
+    role: "member"
+    body: "us/bodies/senate/committees/finance/subcommittees/taxation-and-irs-oversight"
+  - name: "Senate Committee on the Budget"
+    role: "member"
+    body: "us/bodies/senate/committees/the-budget"
+  - name: "Senate Committee on the Judiciary"
+    role: "chair"
+    body: "us/bodies/senate/committees/the-judiciary"
+  - name: "United States Senate Caucus on International Narcotics Control"
+    role: "member"
+    body: "us/bodies/senate/committees/united-states-senate-caucus-on-international-narcotics-control"
 tenure:
   start: "2025-01-03"
   current: true
@@ -19,11 +60,14 @@ ids:
   office: "e6eee025-1abd-4e13-8c08-815f5ef79f58"
   tenure: "b84ecfef-14a0-4b56-9ae1-411e74606150"
   jurisdiction: "6ca9ffef-f143-4cab-82fe-e19bad43da02"
+  bioguide: "G000386"
 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, ia]
 timestamp: "2026-06-20"
@@ -33,9 +77,29 @@ timestamp: "2026-06-20"
 
 Current U.S. Senate - IA (State of Iowa).
 
+## Leadership
+
+- President Pro Tempore of the Senate (since 2025-01-03)
+
+## Committees
+
+- [Joint Committee on Taxation](/us/bodies/joint/committees/taxation.md)
+- [Senate Committee on Agriculture, Nutrition, and Forestry](/us/bodies/senate/committees/agriculture-nutrition-and-forestry.md)
+- [Senate Committee on Agriculture, Nutrition, and Forestry - Commodities, Derivatives, Risk Management, and Trade](/us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/commodities-derivatives-risk-management-and-trade.md)
+- [Senate Committee on Agriculture, Nutrition, and Forestry - Food and Nutrition, Specialty Crops, Organics, and Research](/us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/food-and-nutrition-specialty-crops-organics-and-research.md)
+- [Senate Committee on Agriculture, Nutrition, and Forestry - Rural Development, Energy, and Credit](/us/bodies/senate/committees/agriculture-nutrition-and-forestry/subcommittees/rural-development-energy-and-credit.md)
+- [Senate Committee on Finance](/us/bodies/senate/committees/finance.md)
+- [Senate Committee on Finance - International Trade, Customs, and Global Competitiveness](/us/bodies/senate/committees/finance/subcommittees/international-trade-customs-and-global-competitiveness.md)
+- [Senate Committee on Finance - Social Security, Pensions, and Family Policy](/us/bodies/senate/committees/finance/subcommittees/social-security-pensions-and-family-policy.md) — **chair**
+- [Senate Committee on Finance - Taxation and IRS Oversight](/us/bodies/senate/committees/finance/subcommittees/taxation-and-irs-oversight.md)
+- [Senate Committee on the Budget](/us/bodies/senate/committees/the-budget.md)
+- [Senate Committee on the Judiciary](/us/bodies/senate/committees/the-judiciary.md) — **chair**
+- [United States Senate Caucus on International Narcotics Control](/us/bodies/senate/committees/united-states-senate-caucus-on-international-narcotics-control.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).