Connecticut Gov. M. Jodi Rell is considering vetoing a health insurance bill after a large insurer said the bill would cost the state more than $24 million. The bill would allow municipalities, nonprofits and small businesses with fewer than 50 employees to voluntarily join the state's gigantic health insurance pool. The bill was passed by wide margins in the state House of Representatives and the Senate, was supported by most Democrats, and backed strongly by major labor unions.