How many of you who think the sticking point is the DCA slots have read the actual complaint or the US DOJ PR? There is much more to the complaint that that.
Im not trying to say DCA is the only reason that the DOJ is doing this, but I would bet that it is one of the MAIN reasons and that the people across the river were pushing this.
Without the combined company having such a huge presence in DCA I bet the DOJ would have gone to USAir/AA and done things much more quietly. Instead they have to make it a political spectacle so that certain people in the capital can go to their constituents and say "look, we FOUGHT for you and got the DOJ to do this, this, and this to protect YOU" even though in reality it wont do any of those things.