The Lobbying Disclosure Act of 1995 (LDA) requires lobbyists to file quarterly lobbying disclosure reports and semi-annual reports on certain political contributions. The LDA also requires that GAO annually audit the extent to which lobbyists can demonstrate compliance with disclosure requirements; identify challenges to compliance that lobbyists report; and describe the resources and authorities available to the Office in its role in enforcing LDA compliance and the efforts the Office has made to improve enforcement. This book discusses the 2013 lobbying disclosure; registration and disclosure; and provides a Lobbying Disclosure Act guide.