The Not-So-Secret History of Filibusters By GEORGE J. MITCHELL Published: May 10, 2005 EVERYONE recalls "Mr. Smith Goes to Washington," but too few remember the real-life Mrs. Smith. So, as the Senate nears a vote on a proposal to unilaterally change Senate rules for confirming federal judges, I am reminded of the words spoken 55 years ago by Senator Margaret Chase Smith of Maine in her famous "Declaration of Conscience" against the tactics of Senator Joe McCarthy, a member of her own party. "I don't believe the American people will uphold any political party that puts political exploitation above national...