There's a reason that you can actually get healthcare here and that people from countries with government healthcare come here for treatment when it is not available to them in their country. It's a little ironic that one of the key arguments in the US is that only people with money can afford to get decent healthcare, when you see that people with money from socialized healthcare countries are still the only ones who can get good healthcare. They just do it by flying to places like the US to get it. We could socialize healthcare here and ensure that nobody could get good healthcare, i suppose. I personally don't see healthcare as some inalienable right. I went without it for years when I couldn't afford it and never once did I think that someone should be providing it for me. I was thinking, man I really need to get a job that gives me some access to healthcare that is somewhat affordable...
You say socialized, but you mean nationalized. We already have socialized healthcare, we have for decades. We don't have nationalized healthcare like some nations do. We've been trying to split the difference between free-market healthcare and nationalized healthcare for awhile, to mixed success.
For the most part we've socialized care for seniors, with various intentional and non-intentional schemes to transfer costs from everyone else to pay for it. Seniors love it, everyone else not so much.