One of most recalcitrant Democrats in the health care debate said on Wednesday that his skepticism about a public health insurance option was driven by concern for the health of private insurers. Appearing on MSNBC, Blue Dog Democrat Dan Boren of Oklahoma said that he generally agreed that a government-run insurance program could effectively lower costs for consumers. "The problem," he argued, "is in a state like Oklahoma, where we have a lot of private insurers, you have a public option come in and it drives everything else out and the only thing left is the public option and then you have rationed care." Defending the private insurers is a tricky proposition for any Democrat, even a Blue Dog.