I personally subscribe to what I call "Demand Side Economics". Increasing the disposable income, and the purchasing power of those most likely to spend it is actually very good for an economy. Also I'm a firm believer in investing in the class of consumers that have a "high velocity of money" as opposed to those with a "low velocity of money".

Warren Buffet, probably doesn't spend 10% of his yearly earnings. Probably not even 1%. But for simplicity lets put him at 10%. Give him a tax cut, that money won't wind up, back in the economy, for a very long time. If he's spending 10% per year, it can take as long as 10 years for that money to wind back up sloshing around in the economy.

Now take a poor person. That person spends 100% of their take home pay. Give them money, and it immediately gets spent. The velocity of money for low income, and poor people is very high. Increasing these peoples incomes, there's more economic growth the be had. This helps demand, which helps businesses that provide supply, I think it's a better class of consumers to invest in if your goal is economic growth.