The federal bureaucracy is huge: roughly 2.6 million employees, plus many freelance contractors. Everybody in the bureaucracy works to administer the law. For the most part, the executive branch manages the federal bureaucracy. Although the executive branch controls the majority of the federal bureaucracy, the legislative and judiciary branches also have some influence. Congress, for example, controls the Library of Congress, the Congressional Research Service, and the Government Accountability Office, among other bureaucracies. Through its power of oversight, Congress also monitors the federal bureaucracy to make sure that it acts properly. The courts sometimes get involved in the bureaucracy when issues of law and constitutionality arise, such as when a civil service regulation is violated or if an agency oversteps its jurisdiction.