As far as Marx goes- Obama has almost nothing remotely similar, he was just one of many socialist theorists.
With that being said, a fundamental tenet of socialist theory is the priority of the collective. You could say that socialist theory places the community over the individual. In its purest and most extreme form, that's socialism.
The ideology of those commentators places the individual over the community. This is the bootstraps mentality, the government needs to be small etc
Historically speaking neither of them is very accurate. Even before the Founding there were elements of the collective mixed in with the individual.
Are some of Obama's programs socialistic? Yes.
But so too are the postal service, free public education, social security, and bailouts to banks.
Is Obama plotting a socialist overthrow- no. Those are scare tactics by a beaten and battered Republican party to scare voters. In this country people are allergic to the S word, they equate it with communism which is completely innacurate.
Oh, and US news, particularly cable news is awful. I recommend..... http://news.bbc.co.uk or http://www.npr.org/
Hope this helps