According to the video the mandatory spending is larger then the entire revenue the federal .gov takes in.
I just went to the historical tables on Whitehouse.gov and it looks like for 2011 we are only overspending by 36%. So if EVERY department took a 30% cut this year and then held to a growth in spending of 3% for the next five years and we saw an increase of revenue by 5% each year in five years we would be over spending about 255 Billion each year and still in debt by over 120 Trillion in unfunded liabilities. Not to mention our regular debt of 16 Trillion would not have gone down either.
We have unfunded liabilities of 120 Trillion. To cover that we would need to see a cut in spending of 50% and a growth of 10% a year for the next 60 years. I am not actually going to work an excell spread sheet for the real numbers to be able to cover all the debt right now. But you get the idea. It isn't happening.