A tax break would not be of sufficient value to offset the costs of health insurance.
Also It does not guarantee that the insurance rates would remain the same.

Tax dollars would need to be recouped elsewhere meaning the government would be subsidizing the insurance companies by increasing taxes on employees. If the government has to pay for insurance and your method clearly states that it would be then the government should have some control over the type and rate of insurance it's money and the general populations money is paying to support. Rather then an indirect route which would make insurers less responsible and may or may not result in the population getting the insurance they need.

Perhaps you missed this thread
http://board.flashkit.com/board/show...ight=insurance

Or the story about the insurance company that waited for the patient to die before granting a transplant. or the thread about the insurance company that let a baby die because it was born with a pre existing condition.

Tax breaks cure nothing.