About the Congressional Research Service
The Congressional Research Service
As a legislative branch agency within the Library of Congress, CRS has been a valued and respected resource on Capitol Hill for more than a century. CRS works exclusively for the United States Congress, providing policy and legal analysis to committees and Members of both the House and Senate, regardless of party affiliation. CRS is well known for analysis that is authoritative, confidential, objective, and non-partisan. Its highest priority is to ensure that Congress has 24/7 access to the nation’s best thinking.
Attorneys in the American Law Division (ALD) of CRS provide objective, authoritative, and non-partisan legal analysis on the Constitution and its interpretation to Members of Congress and their staff. They also advise on issues of national importance that arise as part of the legislative process or that are otherwise of interest to Congress.
ALD attorneys inform Congress about its legislative and oversight powers under the Constitution, delineating the limits of federal power over individuals and the states, exploring challenges to enacted legislation and potential problems with contemplated legislation, and examining other constitutional and statutory issues, including the separation of powers, individual rights, federalism and statutory interpretation. Members of Congress and their staff consult with Division attorneys on all facets of law in the United States, including administrative, business, civil rights, cybersecurity, energy, environmental, immigration, intellectual property, international, labor, military, national security, procurement, tax and trade law.
For more information on CRS, visit the Library of Congress.
If you have questions about the Constitution Annotated, please Ask a Law Librarian.