what? I have to pay taxes now on my employer provided health insurance?
Potentially - the idea is not to tax you, but to get people to go out and buy their own health insurance on the open market. Putting people in massive group plans drives costs up, does nothing to encourage individual responsibility (in that it pools the costs of the healthy and the least healthy), and denies individual flexibility.
The ideal system would feature individually-purchased low-premium, high-deductible insurance combined with various tax measures, and health savings accounts.
The present "insurance" system is horribly wasteful in large part because it's expected to behave in a way which no other type of "insurance" does - namely, to cover the day-to-day costs of health care. Imagine what auto insurance would cost if it covered the cost of oil changes and wheel reblanacnings.