The struggle for a more perfect union is the struggle for a union that welcomes all voices. As important as it was to elect a black president in 2008 and as it will be to elect a woman president in 2016, that is simply not good enough. We are neither post-racial nor post-gender. We must be honest about the depth of the problem in order to unloose the structural barriers that contribute to it -- the money, the process, the lineage. It may require some to step aside.