The trouble with supply side is that it's a great idea on paper. But then so is socialism. Both systems fail to take into account human nature. People always want equality, but want to be more equal than the rest of the unwashed masses. So you end up with (in socialism) the wealth concentrated in the Party, or (in trickledown) the wealth not actually trickling down. The rich didn't generally get rich by spending craploads of cash. Most wealthy people are actually pretty frugal. Those who aren't, such as certain celebrities, generally don't spend their money in ways that will help the economy. Buying a Ferrari is great for Italy, but doesn't do quite as much for the USA.
We instead need a fair taxation system that taxes people equally on their ability to pay. Someone pulling in millions of dollars a year can afford to pay quite a bit more than someone pulling in 40,000. They're benefiting from the American financial system, they should pay in to it as well. Balance out the tax burden, we'd end up with more money in government coffers, which would lead to better public services.
I'd say more, but I'm late for work
