Official website of the United States Senate. Provides information on legislative activities of the Senate.

Official website of the United States House of Representatives. Provides information on legislative activities of the House.

The Pew Research Center is a "nonpartisan fact tank that informs the public about the issues, attitudes, and trends shaping America and the world."

A public interest research center in Washington, D.C. which aims to focus public attention on emerging civil liberties issues and to protect privacy, the First Amendment, and constitutional values.

The ACLU website provides information on issues related to the First Amendment and other constituional rights. They ACLU's stated mission is to "defend and preserve the individual rights and liberties guaranteed to every person in this country by the Constitution and laws of the United States."