I'm concerned that Obama hasn't publicly come out in support of Durbin's S. 1035, which is a first attempt to reform the H-1B and L-1 visa programs.
I heard David Sirota do a Q & A about his book, "Uprising". He isn't as sanguine about Obama. He describes Obama as more of an "empty vessel", that really needs to have pressure applied by the progressives. I found this analysis compelling; it certainly seems to be as good an explanation to we we've observed so far about Obama and his campaign.