It's worth noting that almost every single person with influence (president, cabinet, congress, scotus, the heads of all the federal departments of ___) is IN the top 1% (usually the 0.1%). Very few government officials (with serious influence) want to help the masses as much as they want to help themselves / their peers.
So any congresscritter who claims they are working for the benefit of the masses has my immediate suspicion. If their track record shows they're telling the truth, that's a different story, and frankly that's what matters anyway, rather than their election-year talking points.
http://en.wikipedia.org/wiki/File:Productivity_and_Real_Medi...