The thing that most people fail to realize is that a lower corporate tax rate helps the overall enconomy and all Americans. Companies now suddenly have increased capital to spend on growth (hiring, R&D, and acquisitions). Additionally it boost earnings which will likely increase most people's retirement accounts and stock portfolios. Typical that I'm getting downvoted without any rebuttal.
That is the ideal but that isn't reality. The big corporations have large departments devoted to tax avoidance. Where does that saved money go? Usually distributed as dividends to shareholders, executive bonuses, or enormous bank accounts where the money does nothing (e.g. Apple). The best way to improve the economy is put more money into the hands of normal people so that they will buy more stuff which in turn helps…
Here is the problem, without corporations and small/medium businesses this entire world that we live in ceases to exist. Jobs are what make this all possible.