The idea that the more you have, the more you’re expected to contribute in taxes, is a foundation of our income tax system. And there is one government agency that oversees it all: the Internal Revenue Service. However, the tax code itself, and the IRS, are subject to the will of politicians - who might have special interests of their own. We talk about how politics, wealth, and power influence how people file for their taxes in the first place, how some of the wealthiest Americans have the lowest income tax rate, and who is held accountable for paying their "fair share."