How will Universal Healthcare within America affect Health Insurance Companies?

I am watching Obama on TV, and he is talking about Universal Healthcare for adjectives, similar to the healthcare policies of Canada and other countries. How will a plan such as this affect the healthcare companies? Are they going to lose their jobs?
Answers:
From what I've heard from Obama, he is planning on working near the insurance companies to provide universal health nurture while clinton was going to expand medicare/medicaid.

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