Apparently, you don't believe in education either, or you wouldn't spell "global" as "globul" or "religion" as "religon". Tax rates in the U.S. are well below those of other countries. That alone doesn't make the U.S. not-capitalist, but it does put it in perspective. Yes, the company tax rates need to be adjusted, that usually happens about every 20-30 years, so hold on to your britches.
Socialized medicine? Errr....how come the insurance companies are still in business and the new ACA requires everyone to get insurance somehow. Ma and Pa Kettle do get Medicare, but that is because the sainted insurance companies want to cherry pick the healthy people and insure them. Death panels you say? What do you think actuarial boards of insurance companies are?
Global warming is a fact, stop trying to turn it into a political issue. Don't believe me? Look up Miami and the plans they have for sea level rise and how expensive it will be for them. And even if you do not believe in global warming (although frankly I think it is like not believing in gravitation), observe the data on the acidification of the oceans. That's directly due to CO2 we've pumped into the atmosphere. It's killing coral in....Florida and throughout the Caribbean. Localized? Hardly, it is also killing coral in the Great Barrier Reef in Australia. They expect it to be gone within about 50 years if something isn't done. Yes, I know, what's a good Libertarian care about coral. Well, the crux is the ocean is the bottom of the food chain. Maybe you've heard of it, you're at the top...for now.
And if the U.S. isn't a capitalist economy, how did the real estate market manage to tank the U.S. economy and give the world's a cold? The basic problem is that a pure capitalist economy spawns bubbles and monopolies. In order or to level that out, laws and regulations were needed. Don't believe me, look at the U.S. before the Great Depression. The economy was a wild west of an economy and lurched from crisis to crisis. Of course, if you lost your money in one, your days of lurching were over. The Great Recession happened because the Bush Administration did not believe in regulation. The head of the SEC was a puppet of Wall Street. That allowed Wall Street to run amok. Realtors, the local zoning officials, the builders, and the sainted American people worked with almost no rules and...splat...there went the economy.