All of the money cuts the republicans want have only one purpose: to give tax cuts to the rich. The republicans have been fighting for this since Medicare and Medicaid began over 50 years ago.  
 
The rich have no need for a tax cut of any sort. They are already rich beyond any standard for the poor and middle class Americans. But that does not matter to the republicans. To them, the republicans, the rich deserve and need to get even richer and to heck with the poor and middle class. This is what it's all about; make the rich even richer so they will reward the republicans with more money for reelection campaigns.  
 
Any argument the republicans put out about needing to cut, cap, limit, provide block grants, reduce spending, cut the national debt or anything else is just a smoke screen to confuse the people who would be hurt by those cuts, namely the poor and middle class.