Presidents and promises have been comrades since the birth of our nation. Sometimes, the vows have been bold: Lyndon B. Johnson pledged to eliminate poverty in his 1964 State of the Union Address. Obviously, that didn't happen. Other times, the promises have been mostly fulfilled, as when Roosevelt announced his historic New Deal. Throughout his 2008 presidential campaign, President Obama made more than 500 promises to our nation, according to PolitiFact, a service from the St. Petersburg (Fla.) Times that assesses the truth behind politicians' statements. As the president, hampered by a stubborn economy and lukewarm approval rating, vies for reelection this year, here's how his 2008 promises have so far panned out.