Yelof, the fundamental difference between the US and most countries is that the US is much more individualistic. To an outsider, it looks like we may be cold and uncaring. As a whole, I do not think we are either. A bit callous, yes. Cold and uncaring, no. Most Americans can get one hot meal a day, a place to sleep and emergency medical care if needed. It ain't much, that's for sure. But it's better than nothing.
On a fundamental level, I do believe the government should take good care of me, as I help take care of it. Unfortunately, the chances of cutting the stupid-ass bureaucratic red tape in this country are slim to none. In addition, most Americans do not wish to have higher taxes or more government.
As of 2002, 12.1% of all Americans were below the poverty line. That's up from the end of the 90s, but down compared to 20 and 40 years ago. (
Source) That's a lot of people, but not bad for a country of our size.