Our sources

9 sources: 9 In use

• GovInfo, from the Government Publishing OfficeIn use

  The text of each law and of each version of its bill, committee reports, hearings and the U.S. Code.

• Congress’s data service (Congress.gov)In use

  The list of laws, each bill’s actions and recorded votes, related bills, the official bill summaries, and the links to cost estimates of the Congressional Budget Office.

• House roll call votes, from the Clerk of the HouseIn use

  How each House member voted on each recorded vote.

• Senate roll call votesIn use

  How each senator voted on each recorded vote.

• The House Clerk’s weekly list of floor billsIn use

  The moment each bill text was posted for a floor vote, for time to read.

• Congressional Record (on GovInfo)In use

  The lists of member-requested spending in explanatory statements.

• Joint Committee on TaxationIn use

  Its published estimates of a tax law’s effect, by income group.

• Internal Revenue BulletinsIn use

  The 2025 and 2026 tax rate tables and standard deductions.

• Electronic Code of Federal RegulationsIn use

  The rules for foreign agents’ filings, quoted on each foreign agent’s page.

10 sources: 9 In use, 1 In development

• Congress Legislators list (unitedstates project)In use

  Each member’s seat, terms and official website address.

• Members of Congress on Congress.govIn use

  Each member’s official portrait.

• The White House: AdministrationIn use

  The official portraits of the President and the Vice President.

• Congressional Directory (on GovInfo)In use

  Each official’s work before public office.

• Census Bureau ZIP code relationship filesIn use

  Which House district each ZIP code is in, for most Congresses since 2003.

• Missouri Census Data Center, GeocorrIn use

  ZIP codes by House district for Congresses with no Census Bureau file, and population shares.

• UCLA congressional district boundary filesIn use

  A check that district lines did not change between two Congresses.

• Census Bureau geocoderIn use

  The House district of a street address you enter.

• Census Bureau Congressional District Summary File, 119th CongressIn use

  The people of each county in each House district, for Match.

• Census Bureau ZIP code to county fileIn development

  The county of each ZIP code, for totals of Match quiz answers by place.

2 sources: 1 In use, 1 In development

• Federal RegisterIn use

  Each executive order, its text and its signing date.

• Compilation of Presidential Documents (on GovInfo)In development

  The President’s statements about a law or an order, for “On the record”.

13 sources: 10 In use, 3 Not started

• Federal Election Commission dataIn use

  What each campaign raises and spends, who funds each member, and each campaign’s website address.

• FEC bulk committee filesIn use

  The committee list, to mark organizations that fund elections.

• USAspending.govIn use

  Agency spending, dollars under a law’s fund codes, federal contracts and their largest recipients.

• Monthly Treasury Statement (Fiscal Data)In use

  Federal outlays and receipts by agency and program, for My Tax Receipt.

• Office of Management and Budget Historical TablesIn use

  The fixed and open shares of federal spending (Table 8.1).

• Internal Revenue Service tax topics 751 and 560In use

  The Social Security and Medicare tax rates and the Additional Medicare Tax thresholds.

• Social Security Administration yearly noticeIn use

  The wage base for Social Security tax.

• Lobbying Disclosure (lda.gov)In use

  Lobbying reports: who paid whom to lobby on which bills.

• Foreign Agents Registration Act eFileIn use

  Foreign agent registrations, the countries they act for, and every later filing.

• House financial disclosure reports, from the Clerk of the HouseIn use

  Members’ reported stock trades.

• Senate financial disclosure searchNot started

  Senators’ reported stock trades. The site shows reports only after a person agrees to its terms in a browser, so our reader does not use it.

• Office of Government Ethics disclosuresNot started

  The President’s and the Vice President’s financial reports. Our reader for their layout is not built.

• SAM.govNot started

  Contract awards and company owners. The Federal Procurement Data System feed went offline on July 31, 2026, and SAM.gov needs a key.

7 sources: 4 In use, 2 In development, 1 Not started

• Members’ official House and Senate websitesIn use

  Members’ press releases that name a law or an executive order.

• Wikidata, and the organization websites it listsIn use

  The website of each organization named in lobbying reports, and that organization’s press releases.

• Campaign websitesIn use

  Our saved copies of each member’s campaign pages, for campaign promises. The address comes from the FEC’s record.

• Internet ArchiveIn use

  The copy of a campaign website closest to election day.

• Google Ads Transparency CenterIn development

  Political ads by advertisers tied to our record. Google’s file carries no words or pictures, and an ad appears only with our own copy of it.

• Meta Ad LibraryIn development

  Political ads on Facebook and Instagram. Reading starts once an access token is set.

• FCC political filesNot started

  Broadcast ad buys. The files’ download address turns our reader away, so nothing is built.

8 sources: 8 Not started

• Statements of Disbursements of the HouseNot started

  Itemized office spending, for office budget detail.

• Report of the Secretary of the SenateNot started

  Senate office spending, for office budget detail.

• Lobbying contribution reports (LD-203, on lda.gov)Not started

  Contributions lobbyists report, to compare with FEC receipts.

• GLEIF, the Global Legal Entity Identifier FoundationNot started

  Each company’s ultimate parent, to group donors into families.

• SEC EDGARNot started

  Company filings, to tie a traded stock to its issuer.

• HUD USPS ZIP code crosswalkNot started

  ZIP codes by House district, for district scores.

• X (formerly Twitter) APINot started

  Officials’ posts, sampled under a monthly budget.

• BlueskyNot started

  Officials’ posts.