welcome back to "hardball." today was the first day of the annual conservative political action conference, called cpac. kicking off the event were a few presidential hopefuls who took their turns bashing president obama and his potential successor hillary clinton. >> hillary clinton embodies the corruption of washington. obama care is a train wreck. that's actually not fair to train wrecks. >> i started to talk about all the failures selfthe current administration, but i figured that was too depressing. that's probably why they're ready for hillary, too. >> yes, mr. president, isis indeed wants to drive the whole world back to the middle ages, but the rest of us moved on about 800 years ago. like mrs. clinton, i too have traveled the globe.