Gov. Rick Snyder says his plan to reform Blue Cross Blue Shield of Michigan would make health care more affordable and improve health, but it was met Tuesday by resistance from other insurers, the state's attorney general and a consumer group. Snyder's proposal would convert the state's largest health insurer into a mutual insurance company owned by its members, end its special exemption from state taxes and make it comply with state rules that other insurers must meet. It would change a 32-year-old law known as Public Act 350 that requires the Blues to be the insurer of last resort and force it to start paying state and local taxes of about $100 million a year.