Warren Buffet has kicked up a storm by commenting that the super rich in the US need to be taxed more and as a means of example he said that he paid 17% of his income as taxes whereas the people he employed paid in excess of 30%.
One needs to understand that taxes are a means of incentivising business. Thats why Capital Gains taxes are lower than other forms of taxes. Also incentives for exports are given in countries with net forex outflows (like India).
The issues that need to be discussed is the abuse of these lower taxes (or nil taxes) and how corporations have set up tax free contracts. Just plugging these loopholes and reigning in Government expenditure would be more than enough.
Of course taxing the rich at higher slabs will not hurt BUT do you want to be branded a socialist in capitalist america?