There are many things that have disappointed Obama supporters, including me.   But then I knew he was  person 'in the middle' most of his life and that he had used an almost chameleon skill in negotiating his life across racial and ideological divides.   But DC is full of huge ego's and truly powerful individuals inside and outside of the political structure.   One person can't change that environment, including Sanders, Bernie, Clinton or Trump.   

Sadly The Party has been sold to special interest.  The Party no longer even attempt heal the divide, the pander to the differences and hope they cut the cake with at least a sliver that tilts their share over half.

When will see an American president, not a Party favor?   Obama has tried to do that, but his return has not been an appreciation for restraint, Its condemnation from his own party for not being the next FDR.   Republicans just pull the handle of contempt, the standard partisan practice.