Wild Bill Clinton drew his wife's battle-scarred campaign even further off track when he told interviewer Charlie Rose that Americans would be taking a "risk" by voting for close rival Barack Obama, saying the junior senator from Illinois wasn't ready to be president. "If you listen to the people who are most strongly for [Obama], they say basically we have to throw away all these experienced people because they have been through the wars of the '90s," Clinton told Rose for the PBS show that aired Friday night.