I agree with Baron.
Additionally, not explicitly an economic policy, but it would have economic effect: A tax system that is designed solely to tax, not change behavior.
--If Congress wants to change behavior with monetary incentives, Congress should vote on it as a spending item, not as a tax loophole. That way, you will never hear that a Fortune 100 company doesn't pay any taxes. They will pay their taxes, and you will know all the direct benefits they are receiving from the government, and people can debate whether they want to give those benefits to those Fortune 100 companies.
--As it is now, these companies waste a lot of money employing an entire industry of accountants and lawyers whose sole purpose are to claim exemptions, deductions, credits, whatever, from taxes. It is not a waste for them, but it is a needless drain on the national economy. And, it is unfair, because smaller companies and individuals cannot afford those accountants and lawyers. And, it is hidden, because we never hear about the loopholes being offered; we only hear about this occassionally when someone notes that Apple (or whichever company) doesn't pay any taxes. The tax payment form for everyone, every company and every individual, should be a one page document. Eliminate all the crap from the tax code. Make the tax code a pamphlet of a few sheets, not a stack of books 60 feet high that requires hiring people to not get screwed by the government. That would eliminate much of the IRS as well.
In general, government should do just the bare essentials...defense, justice. Everything else is or should be discretionary / temporary / limited. That is the libertarian view, to which I subscribe.
That basically leaves me without a party. No perfect politician for me these days. I vote for very imperfect and lesser evil politicians every time I go to the voting booth. I mostly vote against politicians, not for them. I don't get excited about anyone. Personal opinion, the best politician we have at the national level is Rand Paul. You can dislike him, but he pisses off both right and left, so that is a sign that he has some principles.
Looking forward to you answering you own question.