author
Created by the Constitution as one half of Congress, this official body balances lawmaking with special duties like confirming nominations and approving treaties. Its long history and unusual traditions have made it one of the most closely watched institutions in American government.

by United States. Congress. Senate
The United States Senate is not a single human author but the upper chamber of the U.S. Congress. The Senate’s own historical materials trace its origins to the Constitutional Convention of 1787, where delegates settled on equal representation for the states in the Senate as part of the Great Compromise. The chamber was designed as a continuing body, with senators serving six-year terms and one-third of the seats coming up for election every two years.
Today, the Senate includes two senators from each state, for a total of 100 members. Along with writing and debating legislation, it has distinctive constitutional powers, especially providing advice and consent on presidential nominations and treaties. Because of that mix of legislative work, constitutional authority, and deep institutional memory, Senate documents often read as both practical records and part of the long story of American government.
If this name appears as the author of a work, it usually means the book or document was produced officially by the Senate or under its authority, rather than by one identifiable writer. In that sense, the "author" is the institution itself, speaking through reports, hearings, records, and other congressional publications.