Search for Text Data Sets: Gov. Data

US Government's open data repository.

This user guide instructs developers and researchers on how to use the Census Data Application Programming Interface (API) to request data from U.S. Census Bureau datasets.

Library Of Congress github page on api.congress.gov

Using the Congress API, you can retrieve legislative data from the House of Representatives, the Senate and the Library of Congress. The API, which originated at The New York Times in 2009, includes details about members, votes, bills, nominations and other aspects of congressional activity. This document describes the requests that users can make of the API and the responses that it returns.