In response to the OP:
It's not any more or less unconstitutional than social security.
Social security is plainly unconstitutional.
If congress doesn't follow the constitution to the absolute letter, what makes any of you think they will follow anything that they write to the letter? Oh, that's right, they are just going to do whatever the hell they want, because no one will stop them.
All other arguments are nonessential to this issue. Why should anyone follow the rules given to us by the government, when the government doesn't follow the rules given to it by us?
But, for argument's sake...I'm part of a 'universal healthcare system.' Let me be the first to say, it sucks. I had to wait 2 months for an MRI, turns out I have a herniated disc in my back. Why the two month wait? Well, the aren't enough machines to go around. Why? Because the government foots the bill. There is absolutely ZERO incentive to meet the supply/demand curve.
My pain killers aren't doing the trick? Too bad, the better ones cost more money. Physical therapy is all the way cross town? Too bad, that's who I was assigned.
I think my doctor is a bumbling idiot that doesn't know his/her ass from a hole in the ground (for various reasons)? Too bad, I'm stuck, that's my doctor.
In a private business, if there is a need due to demand, that need is filled, because filling a need = $$.
In a government (business?), if there is a need due to demand, that need is not filled, because filling a need = -$$.
Now, let's discuss healthcare as 'passed' by the congress of the US. It mandates that individuals have health insurance. But more specifically, what kind of health insurance? Well, the 'basic minimum coverage.' Well...that could obviously mean a lot of different things to different people. Who is it decided by? Well, the bill nominates the 'secretary' (I can't remember which department/agency) will establish this minimum. Oh, and the plan has to meet price and a ton of other requirements (again, decided by an agency, not congress).
It's true, the healthcare plan doesn't really do much to the 'deficit.' That's all just part of the crony song and dance congress plays before that do anything. This bill, for the most part, is an unfunded federal mandate. That is, they are require the states to run these exchanges, and are only providing assistance for the start up costs of the program, not any of the cash required to run these 'exchanges.'
At the end of the day, visiting a doctor is still going to cost somebody somewhere money. The overall price of healthcare will rise, private insurance will be all but eliminated due to the extremely unprofitable requirements of the government (except the ultra large companies, which will likely receive subsidies), and the eventual logical outcome is complete government takeover of the healthcare system.
And, as congress knows, once you're dependant on something, they can manipulate you to their will in other areas. Just look at the transportation department. Why do you think your state enforces a 0.08% BAC for DUI enforcement? Because if it's higher than that, no federal handouts.