SSI is a ponzi scheme. With the declining birth rate of the past few years (ie: fewer taxpayers), people living longer, and immigrants sucking money out of it SSI is probably doomed without major changes to keep it afloat.
However, I did read recently that the US birth rate is up recently, so maybe an influx of new taxpayers that will enter the workforce just about the time i'll be ready to retire will be helpful. But undoubtedly obama will have to raise taxes and cut benefits to keep SSI going.
In fact, the raising taxes part has already happened; it used to be that your pay up to a certain amount was subject to FICA withholding and after that the FICA kicked out. Now you pay FICA on income up to 106,800. In fact, here has been the progression:
2005 - limit was 90.000
2006 - limit was 94,200
2007 - limit was 97,500
2008 - limit was 102,000
2009 - limit is 106,800
It wasn't that long ago that the limit was down in the $50,000 range. I remember getting a "raise" when FICA kicked out.
IMO they have just about picked all of the low hanging fruit so I look for either a benefit reduction or a rate increase (from 7.65%) to happen soon. Or both.