From the summary:
America is undertaxed, and the result is underfunding of public investments that would improve our economy and the overall welfare of Americans. Fortunately, Congress has several straightforward policy options to raise revenue, mostly by closing or limiting loopholes and special subsidies imbedded in the tax code that benefit wealthy individuals and profitable businesses.
Part I of this report explains why Congress needs to raise the overall amount of federal revenue collected. Contrary to many politicians’ claims, the United States is much less taxed than other countries, and wealthy individuals and corporations are particularly undertaxed. This means that lawmakers should eschew enacting laws that reduce revenue (including the temporary tax breaks that Congress extends every couple of years), and they should proactively enact new legislation that increases revenue available for public investments. Parts II, III, and IV of this report describe several policy options that would accomplish this. This information is summarized in the table to the right….