Why do Liberals blame the high cost of health care on insurance companies and usually don't even mention the?

prices that providers are charging? The high costs originate with the health care providers. Insurance companies actually fight with providers to keep costs down as much as possible. Why would the insurance companies want health care costs to be more expensive? Do Liberals know the difference between health care providers and health insurance companies? If so why do you never hear them complain about what providers are charging in the first place?
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They are in lock step with their leader Obama who has made the insurance company's the enemy they can not think for themselves.*
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