What are not legitimate concerns are those being put forward claiming a public option is somehow a Trojan horse for a single-payer system. I’ll be honest. There are countries where a single-payer system may be working. But I believe – and I’ve even taken some flak from members of my own party for this belief – that it is important for us to build on our traditions here in the United States. So, when you hear the naysayers claim that I’m trying to bring about government-run health care, know this – they are not telling the truth.

What I am trying to do – and what a public option will help do – is put affordable health care within reach for millions of Americans. And to help ensure that everyone can afford the cost of a health care option in our Exchange, we need to provide assistance to families who need it. That way, there will be no reason at all for anyone to remain uninsured.

– obama 2009

https://www.politico.com/blogs/ben-smith/2009/06/obama-rejects-single-payer-019106