President Obama's appearance on "The Tonight Show" - the first ever for a sitting chief executive - was only a small part of the president's so-called permanent campaign. A bigger move comes Saturday, when Obama will ask 13 million people on his campaign e-mail list to go door-to-door to raise support for his agenda. The Pledge Project Canvass is an unprecedented effort by a president to reach beyond Congress and tap grassroots supporters for help. Volunteers recruited online by Obama's Organizing for America, a post-election group, will ask citizens to sign a pledge in support of the president's policies on...
