The best way to determine where a nation is on the capitalist/socialist scale is to measure how much of it's economy is in the public sector. In other words, what percentage of its GDP comes from government spending.
The USA is 9th on the list with 36.4% and Sweden is the highest, number 1 on the list with 57.0% of their GDP that goes to their government.

Total U.S. GDP $ 14,000 billion
Total government spending $ 5,096 billion (36.4%)

Additional government spending under Obama


Stimulus package $787 billion
Supplemental appropriations 410 billion
Estimated health care spending 625
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Total new Obama spending $1,822 billion
New percentage of GDP from government 49.4%


Where U.S. government once accounted for 36.4percent of our economy, it is now rising to 49 percent---sending us soaring past Britain and Germany and nestling right under France---the very model of a modern socialist democracy!

So, when it comes to Barack Obama's spending programs "socialist" is no political slur. It is a simple description.