The biggest failure of the Democrats was playing around when they took the House in 2008. The problem was that they had a bunch of center-left Clinton Democrats in there who were hesitant. I wonder when true progressives will be able to win in the South again like they used to. Basically, Obama is trying anything to not be a lame duck, but Congress is basically prepared to wait him out. I'm still perplexed as to why there weren't constitutional challenges to the Republican brand of redistricting in 2010. I'll have to ask one of my profs about that. I would've suspected that one would've come by now.
I'm not sure there's any reason other than "Democrats are spineless cowards and are scared of Republicans".
Dudes had the House, Senate, and Presidency and were still letting the Republicans boss them around.