Still confused why there are those who call America the USSA? Don't be. As the following animation from the NYT so vividly shows, government benefits across the US have nearly tripled from a modest 7.8% of all personal income in 1969 to a 'European' 17.6% in 2009. And this before Obama went to town (as a reminder total debt has risen by over $4 trillion under Obama - a significant portion of that has gone to fund social welfare). Thus, we are confident that as of this writing, the government accounts for at least 20% and possibly as high as a quarter of all personal income. One can use any word to describe that transition depending on one's personal political preferences, except for one: "sustainable."
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Source: NYT [4]