Reports from the arm of the Library of Congress that provides non-partisan background information and analysis on issues of interest to congressional members and committees.
The official source for spending data for the U.S. government, showing what the federal government spends every year and how it spends the money, from the Congressional appropriations to the federal agencies and down to local communities and businesses.
Research Centers and Think Tanks
The Policy Research & Analysis section of the library's Law & Policy research guide lists many research centers and think tanks.