"closing loopholes" is nice talking point, but a hypothetical that will never get even close to the amount of revenue lost by cutting corporate taxes. The real way to make up that revenue (raising capital gains substantially) won't be enacted in a GOP majority congress.
I'm no expert on US tax law but when Sweden cut the corporate tax rate in half (54% to 27% if memory serves) revenue was essentially unchanged. My impression is that the US tax code is riddled with weird loopholes and in dire need of an overhaul. In fact, I have a hard time believing the US could be as economically competitive as it is if companies were actually paying a corporate tax rate that is 50% higher than most comparable Western nations.
