Ron Paul is the Rodney Dangerfield of Republican presidential candidates. The 12-term Texas congressman ran for president on the Libertarian Party ticket back in 1988 and was widely seen as a sideshow in 2008, despite finishing third in the GOP field behind John McCain and Mike Huckabee. Why, despite a small but devoted set of supporters, does this 76-year-old obstetrician turned politician routinely get no respect from the media and GOP operatives?