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A trove of leaked IRS tax returns analyzed by ProPublica reveals America’s richest billionaires — including Elon Musk and Jeff Bezos — often pay little to no income tax.

After fiscal cliff talks, comprehensive tax reform could be next. What changes could be part of that package, and would they benefit the economy? Our panel of tax experts has more.

As the federal deficit climbs, Republicans and Democrats can agree on one thing: the federal tax code needs revamping. But how this gets done is up for grabs. What's the reality behind the rhetoric of closing loopholes and raising revenue? We examine the issue.