A media watchdog organization says after a year in the anchor chair at CBS, Katie Couric's liberal approach has perpetuated the network's bias problem. The Media Research Center (MRC) says for 15 years, Couric put her liberal fingerprints all over the Today Show. And after one year on the job at CBS, MRC spokesman Tim Graham says Couric has carried on the liberal tradition of Dan Rather. "Katie Couric has been at it for a year at CBS. She's still a ratings disaster, and she's still channeling all the liberal bias, all the puff jobs for Hillary Clinton and Michael...