Obama said that is his ultimate goal in an interview he gave two years ago. It's in the following video: http://www.breitbart.tv/uncovered-video-obama-explains-how-his-health-care-plan-will-eliminate-private-insurance/
It may take 15-20 years to get there because he said you can't get there immediately. But the man has a plan even if he's not honest and open about it.
This is why people distrust politicians so much and why Americans have become so cynical about the whole process. If only they would lay out the issues in an honest and open way they might get more respect. On the other hand, they are probably right in calculating that we won't vote for them if they are open and honest. It's an awful feedback loop. The country is becoming worse off with every day that passes because of it.